(ROOT (S (NP (NNP Vomit) (NNP Comet)) (VP (VBZ is) (NP (NP (DT a) (NN nickname)) (PP (IN for) (NP (NP (DT any) (NN airplane)) (SBAR (WHNP (WDT that)) (S (ADVP (RB briefly)) (VP (VBZ provides) (NP (NP (DT a) (ADJP (RB nearly) (JJ weightless)) (NN environment)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (VP (TO to) (VP (VP (VB train) (NP (NNS astronauts))) (, ,) (VP (VB conduct) (NP (NN research))) (, ,) (CC and) (NP (NML (NN film) (NN motion)) (NNS pictures)))))))))))))) (. .)))
Vomit Comet is a nickname for any airplane that briefly provides a nearly weightless environment in which to train astronauts, conduct research, and film motion pictures.
compound
Number=Sing
Vomit
Vomit
PROPN
NNP
nsubj
Number=Sing
Comet
Comet
PROPN
NNP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
root
Number=Sing
nickname
nickname
NOUN
NN
case
for
for
ADP
IN
det
any
any
DET
DT
nmod
Number=Sing
airplane
airplane
NOUN
NN
nsubj
PronType=Rel
that
that
PRON
WDT
advmod
briefly
briefly
ADV
RB
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
provide
provides
VERB
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
advmod
nearly
nearly
ADV
RB
amod
Degree=Pos
weightless
weightless
ADJ
JJ
obj
Number=Sing
environment
environment
NOUN
NN
case
in
in
ADP
IN
obl
PronType=Rel
which
which
PRON
WDT
mark
to
to
PART
TO
acl:relcl
VerbForm=Inf
train
train
VERB
VB
obj
Number=Plur
astronaut
astronauts
NOUN
NNS
punct
,
,
PUNCT
,
conj
VerbForm=Inf
conduct
conduct
VERB
VB
obj
Number=Sing
research
research
NOUN
NN
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
compound
Number=Sing
film
film
NOUN
NN
compound
Number=Sing
motion
motion
NOUN
NN
conj
Number=Plur
picture
pictures
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (NP (NP (NNS Versions)) (PP (IN of) (NP (JJ such) (NNS airplanes)))) (VP (VBP have) (PP (IN in) (NP (DT the) (NN past))) (VP (VBN been) (VP (VBN operated) (PP (IN by) (NP (NP (NNP NASA) (POS 's)) (NML (NML (NNP Reduced) (NNP Gravity)) (NNP Research)) (NNP Program))) (PP (IN since) (NP (NP (CD 1973)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (JJ unofficial) (NN nickname)) (VP (VBD originated))))))))) (. .)))
Versions of such airplanes have in the past been operated by NASA's Reduced Gravity Research Program since 1973, where the unofficial nickname originated.
nsubj:pass
Number=Plur
version
Versions
NOUN
NNS
case
of
of
ADP
IN
amod
Degree=Pos
such
such
ADJ
JJ
nmod
Number=Plur
airplane
airplanes
NOUN
NNS
aux
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
have
have
AUX
VBP
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
past
past
NOUN
NN
aux:pass
Tense=Past|VerbForm=Part
be
been
AUX
VBN
root
Tense=Past|VerbForm=Part|Voice=Pass
operate
operated
VERB
VBN
case
by
by
ADP
IN
nmod:poss
Number=Sing
NASA
NASA
PROPN
NNP
case
's
's
PART
POS
amod
Tense=Past|VerbForm=Part
reduce
Reduced
VERB
NNP
compound
Number=Sing
Gravity
Gravity
PROPN
NNP
compound
Number=Sing
Research
Research
PROPN
NNP
obl
Number=Sing
Program
Program
PROPN
NNP
case
since
since
ADP
IN
obl
NumForm=Digit|NumType=Card
1973
1973
NUM
CD
punct
,
,
PUNCT
,
advmod
PronType=Rel
where
where
ADV
WRB
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
unofficial
unofficial
ADJ
JJ
nsubj
Number=Sing
nickname
nickname
NOUN
NN
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
originate
originated
VERB
VBD
punct
.
.
PUNCT
.
(ROOT (S (NP (NNP NASA)) (ADVP (RB then)) (VP (VBD adopted) (NP (NP (NP (DT the) (JJ official) (NN nickname)) (NP (NNP Weightless) (NNP Wonder))) (, ,) (PP (IN for) (NP (NN publication))))) (. .)))
NASA then adopted the official nickname Weightless Wonder, for publication.
nsubj
Number=Sing
NASA
NASA
PROPN
NNP
advmod
PronType=Dem
then
then
ADV
RB
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
adopt
adopted
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
official
official
ADJ
JJ
obj
Number=Sing
nickname
nickname
NOUN
NN
amod
Degree=Pos
weightless
Weightless
ADJ
NNP
appos
Number=Sing
wonder
Wonder
PROPN
NNP
punct
,
,
PUNCT
,
case
for
for
ADP
IN
obl
Number=Sing
publication
publication
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT The) (NN airplane)) (VP (VBZ produces) (NP (NN weightlessness)) (PP (IN by) (S (VP (VBG following) (NP (DT a) (JJ parabolic) (JJ vertical) (NN flight) (NN path)))))) (. .)))
The airplane produces weightlessness by following a parabolic vertical flight path.
det
Definite=Def|PronType=Art
the
The
DET
DT
nsubj
Number=Sing
airplane
airplane
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
produce
produces
VERB
VBZ
obj
Number=Sing
weightlessness
weightlessness
NOUN
NN
mark
by
by
SCONJ
IN
advcl
VerbForm=Ger
follow
following
VERB
VBG
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
amod
Degree=Pos
vertical
vertical
ADJ
JJ
compound
Number=Sing
flight
flight
NOUN
NN
obj
Number=Sing
path
path
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT A) (JJ parabolic) (NN flight) (NN path)) (VP (VBZ is) (NP (NP (DT the) (JJ same) (NN path)) (SBAR (WHNP (WDT that)) (S (VP (MD would) (VP (VB be) (VP (VBN taken) (PP (IN by) (NP (NP (NP (DT an) (NN object)) (PP (IN in) (NP (JJ free) (NN fall)))) (, ,) (PP (JJ such) (IN as) (NP (NP (DT a) (NN cannonball)) (VP (VBN fired) (PP (IN into) (NP (DT the) (NN air))))))))))))))) (. .)))
A parabolic flight path is the same path that would be taken by an object in free fall, such as a cannonball fired into the air.
det
Definite=Ind|PronType=Art
a
A
DET
DT
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
compound
Number=Sing
flight
flight
NOUN
NN
nsubj
Number=Sing
path
path
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
same
same
ADJ
JJ
root
Number=Sing
path
path
NOUN
NN
nsubj:pass
PronType=Rel
that
that
PRON
WDT
aux
VerbForm=Fin
would
would
AUX
MD
aux:pass
VerbForm=Inf
be
be
AUX
VB
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
take
taken
VERB
VBN
case
by
by
ADP
IN
det
Definite=Ind|PronType=Art
a
an
DET
DT
obl:agent
Number=Sing
object
object
NOUN
NN
case
in
in
ADP
IN
amod
Degree=Pos
free
free
ADJ
JJ
nmod
Number=Sing
fall
fall
NOUN
NN
punct
,
,
PUNCT
,
case
Degree=Pos
such
such
ADJ
JJ
fixed
as
as
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
nmod
Number=Sing
cannonball
cannonball
NOUN
NN
acl
Tense=Past|VerbForm=Part
fire
fired
VERB
VBN
case
into
into
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
air
air
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (PP (IN As) (NP (DT a) (NN result))) (, ,) (S (NP (DT the) (NN aircraft)) (VP (VBZ does) (RB not) (VP (VB exert) (NP (DT any) (NN g-force)) (PP (IN on) (NP (PRP$ its) (NNS contents)))))) (, ,) (RB so) (S (NP (DT the) (NNS contents)) (VP (VBP have) (NP (NP (CD zero) (JJ apparent) (NN weight)) (ADJP (RB relative) (PP (IN to) (NP (DT the) (NN aircraft))))))) (. .)))
As a result, the aircraft does not exert any g-force on its contents, so the contents have zero apparent weight relative to the aircraft.
case
as
As
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
obl
Number=Sing
result
result
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
aircraft
aircraft
NOUN
NN
aux
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
do
does
AUX
VBZ
advmod
not
not
PART
RB
root
VerbForm=Inf
exer
exert
VERB
VB
det
any
any
DET
DT
obj
Number=Sing
g-force
g-force
NOUN
NN
case
on
on
ADP
IN
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
obl
Number=Plur
content
contents
NOUN
NNS
punct
,
,
PUNCT
,
advmod
so
so
ADV
RB
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Plur
content
contents
NOUN
NNS
parataxis
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
have
have
VERB
VBP
nummod
NumForm=Word|NumType=Card
zero
zero
NUM
CD
amod
Degree=Pos
apparent
apparent
ADJ
JJ
obj
Number=Sing
weight
weight
NOUN
NN
advmod
relative
relative
ADV
RB
case
to
to
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
aircraft
aircraft
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT The) (NN aircraft)) (VP (VBZ heads) (ADVP (RB upward)) (PP (IN at) (NP (NP (DT an) (NN angle)) (PP (IN of) (NP (CD 45) (NNS degrees)))))) (. .)))
The aircraft heads upward at an angle of 45 degrees.
det
Definite=Def|PronType=Art
the
The
DET
DT
nsubj
Number=Sing
aircraft
aircraft
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
head
heads
VERB
VBZ
advmod
upward
upward
ADV
RB
case
at
at
ADP
IN
det
Definite=Ind|PronType=Art
a
an
DET
DT
obl
Number=Sing
angle
angle
NOUN
NN
case
of
of
ADP
IN
nummod
NumForm=Digit|NumType=Card
45
45
NUM
CD
nmod
Number=Plur
degree
degrees
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (ADVP (ADVP (RB As) (RB soon)) (SBAR (IN as) (S (NP (DT the) (NN pilot)) (VP (VBZ begins) (NP (DT the) (NN rotation)) (PP (IN into) (NP (DT the) (JJ parabolic) (NN trajectory))))))) (, ,) (NP (NN weightlessness)) (VP (VBZ is) (VP (VBN achieved))) (. .)))
As soon as the pilot begins the rotation into the parabolic trajectory, weightlessness is achieved.
advmod
as
As
ADV
RB
advmod
Degree=Pos
soon
soon
ADV
RB
mark
as
as
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
pilot
pilot
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
begin
begins
VERB
VBZ
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
rotation
rotation
NOUN
NN
case
into
into
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
obl
Number=Sing
trajectory
trajectory
NOUN
NN
punct
,
,
PUNCT
,
nsubj:pass
Number=Sing
weightlessness
weightlessness
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Tense=Past|VerbForm=Part|Voice=Pass
achieve
achieved
VERB
VBN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT This)) (VP (VBZ lasts) (NP (PDT all) (DT the) (NN way)) (`` ") (PP (IN up-and-over) (NP (DT the) (NN hump))) ('' ") (, ,) (SBAR (IN until) (S (NP (DT the) (NN craft)) (VP (VBZ reaches) (NP (NP (DT a) (VBN declined) (NN angle)) (PP (IN of) (NP (CD 30) (NNS degrees)))))))) (. .)))
This lasts all the way " up-and-over the hump ", until the craft reaches a declined angle of 30 degrees.
nsubj
Number=Sing|PronType=Dem
this
This
PRON
DT
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
last
lasts
VERB
VBZ
det:predet
all
all
DET
PDT
det
Definite=Def|PronType=Art
the
the
DET
DT
obl:npmod
Number=Sing
way
way
NOUN
NN
punct
"
"
PUNCT
``
case
up-and-over
up-and-over
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
hump
hump
NOUN
NN
punct
"
"
PUNCT
''
punct
,
,
PUNCT
,
mark
until
until
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
craft
craft
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
reach
reaches
VERB
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Tense=Past|VerbForm=Part
decline
declined
VERB
VBN
obj
Number=Sing
angle
angle
NOUN
NN
case
of
of
ADP
IN
nummod
NumForm=Digit|NumType=Card
30
30
NUM
CD
nmod
Number=Plur
degree
degrees
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (PP (IN At) (NP (DT this) (NN point))) (, ,) (NP (DT the) (NN craft)) (VP (VP (VBZ has) (VP (VBN lost) (NP (NP (DT a) (JJ significant) (NN amount)) (PP (IN of) (NP (NN altitude)))))) (, ,) (CC and) (VP (MD must) (VP (VB begin) (S (VP (TO to) (VP (VB pull) (PP (IN into) (NP (DT a) (JJ hard) (JJ upward) (NN turn))))))))) (. .)))
At this point, the craft has lost a significant amount of altitude, and must begin to pull into a hard upward turn.
case
at
At
ADP
IN
det
Number=Sing|PronType=Dem
this
this
DET
DT
obl
Number=Sing
point
point
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
craft
craft
NOUN
NN
aux
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
have
has
AUX
VBZ
root
Tense=Past|VerbForm=Part
lose
lost
VERB
VBN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
significant
significant
ADJ
JJ
obj
Number=Sing
amount
amount
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
altitude
altitude
NOUN
NN
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
aux
VerbForm=Fin
must
must
AUX
MD
conj
VerbForm=Inf
begin
begin
VERB
VB
mark
to
to
PART
TO
xcomp
VerbForm=Inf
pull
pull
VERB
VB
case
into
into
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
hard
hard
ADJ
JJ
amod
Degree=Pos
upward
upward
ADJ
JJ
obl
Number=Sing
turn
turn
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT The) (NNS forces)) (VP (VBP are) (ADVP (RB then)) (NP (NP (QP (RB roughly) (RB twice)) (DT that)) (PP (IN of) (NP (NN gravity)))) (PP (IN on) (NP (NP (DT the) (NN way)) (RB down))) (, ,) (PP (IN at) (NP (DT the) (NN bottom))) (, ,) (CC and) (ADVP (RB up)) (ADVP (RB again))) (. .)))
The forces are then roughly twice that of gravity on the way down, at the bottom, and up again.
det
Definite=Def|PronType=Art
the
The
DET
DT
nsubj
Number=Plur
force
forces
NOUN
NNS
cop
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
advmod
PronType=Dem
then
then
ADV
RB
advmod
roughly
roughly
ADV
RB
advmod
NumType=Mult
twice
twice
ADV
RB
root
Number=Sing|PronType=Dem
that
that
PRON
DT
case
of
of
ADP
IN
nmod
Number=Sing
gravity
gravity
NOUN
NN
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
way
way
NOUN
NN
advmod
down
down
ADV
RB
punct
,
,
PUNCT
,
case
at
at
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
bottom
bottom
NOUN
NN
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
conj
up
up
ADV
RB
advmod
again
again
ADV
RB
punct
.
.
PUNCT
.
(ROOT (S (S (NP (DT This)) (VP (VBZ lasts) (NP (PDT all) (DT the) (NN way)) (SBAR (IN until) (S (NP (DT the) (NN aircraft)) (VP (VBZ is) (ADVP (RB again)) (ADVP (RB halfway) (RP up) (NP (PRP$ its) (JJ upward) (NN trajectory)))))))) (, ,) (CC and) (S (NP (DT the) (NN pilot)) (ADVP (RB again)) (VP (VBZ initiates) (NP (DT the) (JJ zero-g) (NN parabola)))) (. .)))
This lasts all the way until the aircraft is again halfway up its upward trajectory, and the pilot again initiates the zero-g parabola.
nsubj
Number=Sing|PronType=Dem
this
This
PRON
DT
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
last
lasts
VERB
VBZ
det:predet
all
all
DET
PDT
det
Definite=Def|PronType=Art
the
the
DET
DT
obl:npmod
Number=Sing
way
way
NOUN
NN
mark
until
until
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
aircraft
aircraft
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
again
again
ADV
RB
advmod
halfway
halfway
ADV
RB
case
up
up
ADP
RP
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
amod
Degree=Pos
upward
upward
ADJ
JJ
advcl
Number=Sing
trajectory
trajectory
NOUN
NN
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
pilot
pilot
NOUN
NN
advmod
again
again
ADV
RB
conj
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
initiate
initiates
VERB
VBZ
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
zero-g
zero-g
ADJ
JJ
obj
Number=Sing
parabola
parabola
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (ADJP (JJ general))) (, ,) (NP (DT this) (NN aircraft)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB train) (NP (NNS astronauts)) (PP (IN in) (NP (JJ zero-g) (NNS maneuvers)))))) (, ,) (S (VP (VBG giving) (NP (PRP them)) (NP (NP (QP (RB about) (CD 25)) (NNS seconds)) (PP (IN of) (NP (NN weightlessness)))) (PP (IN out) (PP (IN of) (NP (NP (CD 65) (NNS seconds)) (PP (IN of) (NP (NN flight)))))))))) (. .)))
In general, this aircraft is used to train astronauts in zero-g maneuvers, giving them about 25 seconds of weightlessness out of 65 seconds of flight.
case
in
In
ADP
IN
obl
Degree=Pos
general
general
ADJ
JJ
punct
,
,
PUNCT
,
det
Number=Sing|PronType=Dem
this
this
DET
DT
nsubj:pass
Number=Sing
aircraft
aircraft
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Tense=Past|VerbForm=Part|Voice=Pass
use
used
VERB
VBN
mark
to
to
PART
TO
advcl
VerbForm=Inf
train
train
VERB
VB
obj
Number=Plur
astronaut
astronauts
NOUN
NNS
case
in
in
ADP
IN
amod
Degree=Pos
zero-g
zero-g
ADJ
JJ
obl
Number=Plur
maneuver
maneuvers
NOUN
NNS
punct
,
,
PUNCT
,
advcl
VerbForm=Ger
give
giving
VERB
VBG
iobj
Case=Acc|Number=Plur|Person=3|PronType=Prs
they
them
PRON
PRP
advmod
about
about
ADV
RB
nummod
NumForm=Digit|NumType=Card
25
25
NUM
CD
obj
Number=Plur
second
seconds
NOUN
NNS
case
of
of
ADP
IN
nmod
Number=Sing
weightlessness
weightlessness
NOUN
NN
case
out
out
ADP
IN
fixed
of
of
ADP
IN
nummod
NumForm=Digit|NumType=Card
65
65
NUM
CD
obl
Number=Plur
second
seconds
NOUN
NNS
case
of
of
ADP
IN
nmod
Number=Sing
flight
flight
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT This)) (ADVP (RB often)) (VP (VBZ produces) (NP (NN nausea)) (PP (IN due) (IN to) (NP (NN airsickness))) (, ,) (PP (ADVP (RB especially)) (IN in) (NP (NNS novices))) (, ,) (S (VP (VBG giving) (NP (DT the) (NN plane)) (NP (PRP$ its) (NN nickname))))) (. .)))
This often produces nausea due to airsickness, especially in novices, giving the plane its nickname.
nsubj
Number=Sing|PronType=Dem
this
This
PRON
DT
advmod
Degree=Pos
often
often
ADV
RB
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
produce
produces
VERB
VBZ
obj
Number=Sing
nausea
nausea
NOUN
NN
case
due
due
ADP
IN
fixed
to
to
ADP
IN
obl
Number=Sing
airsickness
airsickness
NOUN
NN
punct
,
,
PUNCT
,
advmod
especially
especially
ADV
RB
case
in
in
ADP
IN
obl
Number=Plur
novice
novices
NOUN
NNS
punct
,
,
PUNCT
,
advcl
VerbForm=Ger
give
giving
VERB
VBG
det
Definite=Def|PronType=Art
the
the
DET
DT
iobj
Number=Sing
plane
plane
NOUN
NN
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
obj
Number=Sing
nickname
nickname
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (NNP NASA)) (VP (VBZ has) (VP (VBN flown) (NP (NP (JJ parabolic) (NNS flights)) (PP (IN on) (NP (JJ various) (NN aircraft)))) (PP (IN for) (NP (JJ many) (NNS years))))) (. .)))
NASA has flown parabolic flights on various aircraft for many years.
nsubj
Number=Sing
NASA
NASA
PROPN
NNP
aux
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
have
has
AUX
VBZ
root
Tense=Past|VerbForm=Part
fly
flown
VERB
VBN
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
obj
Number=Plur
flight
flights
NOUN
NNS
case
on
on
ADP
IN
amod
Degree=Pos
various
various
ADJ
JJ
nmod
Number=Sing
aircraft
aircraft
NOUN
NN
case
for
for
ADP
IN
amod
Degree=Pos
many
many
ADJ
JJ
obl
Number=Plur
year
years
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (NP (CD 1959))) (, ,) (NP (NML (NNP Project) (NNP Mercury)) (NNS astronauts)) (VP (VBD trained) (PP (IN in) (NP (NP (DT a) (NNP C-131) (NNP Samaritan) (NN aircraft)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBN dubbed) (S (NP (DT the) (`` ") (NNP Vomit) (NNP Comet) ('' ")))))))))) (. .)))
In 1959, Project Mercury astronauts trained in a C-131 Samaritan aircraft, which was dubbed the " Vomit Comet ".
case
in
In
ADP
IN
obl
NumForm=Digit|NumType=Card
1959
1959
NUM
CD
punct
,
,
PUNCT
,
compound
Number=Sing
Project
Project
PROPN
NNP
compound
Number=Sing
Mercury
Mercury
PROPN
NNP
nsubj
Number=Plur
astronaut
astronauts
NOUN
NNS
root
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
train
trained
VERB
VBD
case
in
in
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
compound
Number=Sing
C-131
C-131
PROPN
NNP
compound
Number=Sing
Samaritan
Samaritan
PROPN
NNP
obl
Number=Sing
aircraft
aircraft
NOUN
NN
punct
,
,
PUNCT
,
nsubj:pass
PronType=Rel
which
which
PRON
WDT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
dub
dubbed
VERB
VBN
det
Definite=Def|PronType=Art
the
the
DET
DT
punct
"
"
PUNCT
``
compound
Number=Sing
Vomit
Vomit
PROPN
NNP
xcomp
Number=Sing
Comet
Comet
PROPN
NNP
punct
"
"
PUNCT
''
punct
.
.
PUNCT
.
(ROOT (S (NP (NNP Twin) (NNP KC-135) (NNPS Stratotankers)) (VP (VP (VBD were) (VP (VBN used) (PP (IN until) (NP (NNP December) (CD 2004))))) (CC and) (VP (VBP have) (ADVP (RB since)) (VP (VBN been) (VP (VBN retired))))) (. .)))
Twin KC-135 Stratotankers were used until December 2004 and have since been retired.
compound
Number=Sing
Twin
Twin
PROPN
NNP
compound
Number=Sing
KC-135
KC-135
PROPN
NNP
nsubj:pass
Number=Plur
Stratotanker
Stratotankers
PROPN
NNPS
aux:pass
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
be
were
AUX
VBD
root
Tense=Past|VerbForm=Part|Voice=Pass
use
used
VERB
VBN
case
until
until
ADP
IN
obl
Number=Sing
December
December
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
2004
2004
NUM
CD
cc
and
and
CCONJ
CC
aux
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
have
have
AUX
VBP
advmod
since
since
ADV
RB
aux:pass
Tense=Past|VerbForm=Part
be
been
AUX
VBN
conj
Tense=Past|VerbForm=Part|Voice=Pass
retire
retired
VERB
VBN
punct
.
.
PUNCT
.
(ROOT (S (S (NP (NP (CD One)) (, ,) (NP (NP (DT a) (NNP KC-135A)) (VP (VBN known) (PP (IN as) (NP (NNP NASA) (CD 930))))) (, ,)) (VP (VBD was) (ADVP (RB also)) (VP (VBN used) (PP (IN by) (NP (NP (NNP Universal) (NNPS Pictures)) (CC and) (NP (NNP Imagine) (NNP Entertainment)))) (PP (IN for) (S (VP (NN filming) (NP (NP (NNS scenes)) (VP (VBG involving) (NP (NN weightlessness)))) (PP (IN in) (NP (NP (DT the) (NN movie)) (NP (NNP Apollo) (CD 13)))))))))) (: ;) (S (NP (DT that) (NN airplane)) (VP (VP (VBD was) (VP (VBN retired) (PP (IN in) (NP (CD 2000))))) (CC and) (VP (VBZ is) (ADVP (RB now)) (PP (IN on) (NP (NN display))) (PP (IN at) (NP (NP (NNP Ellington) (NNP Field)) (, ,) (PP (IN near) (NP (DT the) (NNP Johnson) (NNP Space) (NNP Center)))))))) (. .)))
One, a KC-135A known as NASA 930, was also used by Universal Pictures and Imagine Entertainment for filming scenes involving weightlessness in the movie Apollo 13; that airplane was retired in 2000 and is now on display at Ellington Field, near the Johnson Space Center.
nsubj:pass
NumForm=Word|NumType=Card
one
One
NUM
CD
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
appos
Number=Sing
KC-135A
KC-135A
PROPN
NNP
acl
Tense=Past|VerbForm=Part
know
known
VERB
VBN
case
as
as
ADP
IN
obl
Number=Sing
NASA
NASA
PROPN
NNP
dep
NumForm=Digit|NumType=Card
930
930
NUM
CD
punct
,
,
PUNCT
,
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
advmod
also
also
ADV
RB
root
Tense=Past|VerbForm=Part|Voice=Pass
use
used
VERB
VBN
case
by
by
ADP
IN
amod
Degree=Pos
Universal
Universal
ADJ
NNP
obl
Number=Plur
picture
Pictures
PROPN
NNPS
cc
and
and
CCONJ
CC
compound
Number=Sing
Imagine
Imagine
PROPN
NNP
conj
Number=Sing
Entertainment
Entertainment
PROPN
NNP
case
for
for
SCONJ
IN
amod
Number=Sing
filming
filming
NOUN
NN
obl
Number=Plur
scene
scenes
NOUN
NNS
acl
VerbForm=Ger
involve
involving
VERB
VBG
obj
Number=Sing
weightlessness
weightlessness
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
movie
movie
NOUN
NN
appos
Number=Sing
Apollo
Apollo
PROPN
NNP
dep
NumForm=Digit|NumType=Card
13
13
NUM
CD
punct
;
;
PUNCT
:
det
Number=Sing|PronType=Dem
that
that
DET
DT
nsubj:pass
Number=Sing
airplane
airplane
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
parataxis
Tense=Past|VerbForm=Part|Voice=Pass
retire
retired
VERB
VBN
case
in
in
ADP
IN
obl
NumForm=Digit|NumType=Card
2000
2000
NUM
CD
cc
and
and
CCONJ
CC
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
now
now
ADV
RB
case
on
on
ADP
IN
conj
Number=Sing
display
display
NOUN
NN
case
at
at
ADP
IN
compound
Number=Sing
Ellington
Ellington
PROPN
NNP
nmod
Number=Sing
Field
Field
PROPN
NNP
punct
,
,
PUNCT
,
case
near
near
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
Johnson
Johnson
PROPN
NNP
compound
Number=Sing
Space
Space
PROPN
NNP
nmod
Number=Sing
Center
Center
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (NP (PRP It)) (VP (VBZ is) (VP (VBN estimated) (S (VP (TO to) (VP (VB have) (VP (VBN flown) (NP (QP (RB over) (CD 58,000)) (NNS parabolas)))))))) (. .)))
It is estimated to have flown over 58,000 parabolas.
nsubj:pass
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
It
PRON
PRP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Tense=Past|VerbForm=Part|Voice=Pass
estimate
estimated
VERB
VBN
mark
to
to
PART
TO
aux
VerbForm=Inf
have
have
AUX
VB
xcomp
Tense=Past|VerbForm=Part
fly
flown
VERB
VBN
advmod
over
over
ADV
RB
nummod
NumForm=Digit|NumType=Card
58000
58,000
NUM
CD
obj
Number=Plur
parabola
parabolas
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (NP (NP (DT The) (JJ other)) (-LRB- -LRB-) (NP (NP (NNP N931NA)) (CC or) (NP (NNP NASA) (CD 931))) (-RRB- -RRB-)) (VP (VP (VBD made) (NP (PRP$ its) (JJ final) (NN flight)) (PP (IN on) (NP (NNP October) (CD 29) (, ,) (CD 2004)))) (, ,) (CC and) (VP (VBZ is) (ADVP (RB permanently)) (VP (VBN stored) (PP (IN in) (NP (NP (DT the) (NML (NML (NNP Pima) (NNP Air) (NNP &amp;)) (NNP Space)) (NNP Museum)) (PP (IN in) (NP (NP (NNP Tucson)) (, ,) (NP (NNP Arizona))))))))) (. .)))
The other (N931NA or NASA 931) made its final flight on October 29, 2004, and is permanently stored in the Pima Air &amp; Space Museum in Tucson, Arizona.
det
Definite=Def|PronType=Art
the
The
DET
DT
nsubj
Degree=Pos
other
other
ADJ
JJ
punct
(
(
PUNCT
-LRB-
appos
Number=Sing
N931NA
N931NA
PROPN
NNP
cc
or
or
CCONJ
CC
conj
Number=Sing
NASA
NASA
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
931
931
NUM
CD
punct
)
)
PUNCT
-RRB-
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
make
made
VERB
VBD
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
amod
Degree=Pos
final
final
ADJ
JJ
obj
Number=Sing
flight
flight
NOUN
NN
case
on
on
ADP
IN
obl
Number=Sing
October
October
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
29
29
NUM
CD
punct
,
,
PUNCT
,
nummod
NumForm=Digit|NumType=Card
2004
2004
NUM
CD
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
permanently
permanently
ADV
RB
conj
Tense=Past|VerbForm=Part|Voice=Pass
store
stored
VERB
VBN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
Pima
Pima
PROPN
NNP
compound
Number=Sing
Air
Air
PROPN
NNP
compound
Number=Sing
&amp;
&amp;
PROPN
NNP
compound
Number=Sing
Space
Space
PROPN
NNP
obl
Number=Sing
Museum
Museum
PROPN
NNP
case
in
in
ADP
IN
nmod
Number=Sing
Tucson
Tucson
PROPN
NNP
punct
,
,
PUNCT
,
appos
Number=Sing
Arizona
Arizona
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (NP (CD 2005))) (, ,) (NP (NNP NASA)) (VP (VBD replaced) (NP (DT the) (NN airplane)) (PP (IN with) (NP (NP (DT a) (NML (NNP McDonnell) (NNP Douglas) (NNP C-9B)) (NNP Skytrain) (CD II)) (SBAR (WHNP (WDT that)) (S (VP (VBD was) (ADVP (RB formerly)) (VP (VBN owned) (PP (IN by) (NP (NP (NNP KLM) (NNP Royal) (NNP Dutch) (NNPS Airlines)) (CC and) (NP (DT the) (NML (NNP United) (NNPS States)) (NNP Navy))))))))))) (. .)))
In 2005, NASA replaced the airplane with a McDonnell Douglas C-9B Skytrain II that was formerly owned by KLM Royal Dutch Airlines and the United States Navy.
case
in
In
ADP
IN
obl
NumForm=Digit|NumType=Card
2005
2005
NUM
CD
punct
,
,
PUNCT
,
nsubj
Number=Sing
NASA
NASA
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
replace
replaced
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
airplane
airplane
NOUN
NN
case
with
with
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
compound
Number=Sing
McDonnell
McDonnell
PROPN
NNP
compound
Number=Sing
Douglas
Douglas
PROPN
NNP
compound
Number=Sing
C-9B
C-9B
PROPN
NNP
obl
Number=Sing
Skytrain
Skytrain
PROPN
NNP
dep
NumForm=Roman|NumType=Card
II
II
NUM
CD
nsubj:pass
PronType=Rel
that
that
PRON
WDT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
advmod
formerly
formerly
ADV
RB
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
own
owned
VERB
VBN
case
by
by
ADP
IN
compound
Number=Sing
KLM
KLM
PROPN
NNP
amod
Degree=Pos
Royal
Royal
ADJ
NNP
amod
Degree=Pos
dutch
Dutch
ADJ
NNP
obl
Number=Plur
Airline
Airlines
PROPN
NNPS
cc
and
and
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
United
United
ADJ
NNP
compound
Number=Plur
State
States
PROPN
NNPS
conj
Number=Sing
Navy
Navy
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (NP (DT That) (JJ same) (NN year)) (, ,) (NP (NP (DT the) (NNP Zero-Gravity) (NNP Corporation)) (, ,) (NP (NP (DT a) (JJ commercial) (JJ parabolic) (NN flight) (NN operator)) (SBAR (WHNP (WDT which)) (S (VP (VBZ offers) (NP (NP (JJ parabolic) (NNS flights)) (PP (IN to) (NP (CC both) (NP (NNS researchers)) (CC and) (NP (NN adventure) (NNS tourists))))))))) (, ,)) (VP (VBD began) (S (VP (VBG flying) (NP (NP (JJ parabolic) (NNS flights)) (PP (IN for) (NP (NNP NASA)))) (PP (IN with) (NP (NML (NNP Boeing) (CD 727)) (NNS jets)))))) (. .)))
That same year, the Zero-Gravity Corporation, a commercial parabolic flight operator which offers parabolic flights to both researchers and adventure tourists, began flying parabolic flights for NASA with Boeing 727 jets.
det
Number=Sing|PronType=Dem
that
That
DET
DT
amod
Degree=Pos
same
same
ADJ
JJ
obl:tmod
Number=Sing
year
year
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
Zero-Gravity
Zero-Gravity
PROPN
NNP
nsubj
Number=Sing
Corporation
Corporation
PROPN
NNP
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
commercial
commercial
ADJ
JJ
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
compound
Number=Sing
flight
flight
NOUN
NN
appos
Number=Sing
operator
operator
NOUN
NN
nsubj
PronType=Rel
which
which
PRON
WDT
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
offer
offers
VERB
VBZ
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
obj
Number=Plur
flight
flights
NOUN
NNS
case
to
to
ADP
IN
cc:preconj
both
both
CCONJ
CC
nmod
Number=Plur
researcher
researchers
NOUN
NNS
cc
and
and
CCONJ
CC
compound
Number=Sing
adventure
adventure
NOUN
NN
conj
Number=Plur
tourist
tourists
NOUN
NNS
punct
,
,
PUNCT
,
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
begin
began
VERB
VBD
xcomp
VerbForm=Ger
fly
flying
VERB
VBG
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
obj
Number=Plur
flight
flights
NOUN
NNS
case
for
for
ADP
IN
nmod
Number=Sing
NASA
NASA
PROPN
NNP
case
with
with
ADP
IN
compound
Number=Sing
Boeing
Boeing
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
727
727
NUM
CD
obl
Number=Plur
jet
jets
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (PP (IN Since) (NP (CD 1984))) (, ,) (NP (NP (DT the) (NNP ESA)) (CC and) (NP (DT the) (NNP CNES))) (VP (VBP have) (VP (VBN flown) (NP (JJ similar) (JJ reduced-gravity) (NNS missions)) (PP (IN in) (NP (NP (DT a) (NN variety)) (PP (IN of) (NP (NNS airplanes))) (, ,) (PP (VBG including) (NP (NP (NP (NNP NASA) (POS 's)) (NNP KC-135)) (, ,) (NP (NP (DT a) (NNP Caravelle)) (, ,) (NP (DT an) (NNP Ilyushin) (NNP IL-76) (NNP MDK))) (, ,) (CC and) (, ,) (ADVP (RBS most) (RB recently)) (, ,) (NP (NP (DT an) (NNP Airbus) (NNP A300)) (VP (VBN known) (PP (IN as) (NP (NP (DT the) (NNP Zero-G)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN flown) (PP (IN out) (PP (IN of) (NP (NP (DT the) (NNP Bordeaux-Merignac) (NN airport)) (PP (IN in) (NP (NNP France)))))))))))))))))))) (. .)))
Since 1984, the ESA and the CNES have flown similar reduced-gravity missions in a variety of airplanes, including NASA's KC-135, a Caravelle, an Ilyushin IL-76 MDK, and, most recently, an Airbus A300 known as the Zero-G, which is flown out of the Bordeaux-Merignac airport in France.
case
since
Since
ADP
IN
obl
NumForm=Digit|NumType=Card
1984
1984
NUM
CD
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
ESA
ESA
PROPN
NNP
cc
and
and
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
conj
Number=Sing
CNES
CNES
PROPN
NNP
aux
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
have
have
AUX
VBP
root
Tense=Past|VerbForm=Part
fly
flown
VERB
VBN
amod
Degree=Pos
similar
similar
ADJ
JJ
amod
Degree=Pos
reduced-gravity
reduced-gravity
ADJ
JJ
obj
Number=Plur
mission
missions
NOUN
NNS
case
in
in
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
obl
Number=Sing
variety
variety
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Plur
airplane
airplanes
NOUN
NNS
punct
,
,
PUNCT
,
case
VerbForm=Ger
include
including
VERB
VBG
nmod:poss
Number=Sing
NASA
NASA
PROPN
NNP
case
's
's
PART
POS
nmod
Number=Sing
KC-135
KC-135
PROPN
NNP
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
conj
Number=Sing
Caravelle
Caravelle
PROPN
NNP
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
an
DET
DT
compound
Number=Sing
Ilyushin
Ilyushin
PROPN
NNP
compound
Number=Sing
IL-76
IL-76
PROPN
NNP
conj
Number=Sing
MDK
MDK
PROPN
NNP
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
punct
,
,
PUNCT
,
advmod
Degree=Sup
most
most
ADV
RBS
advmod
recently
recently
ADV
RB
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
an
DET
DT
compound
Number=Sing
Airbus
Airbus
PROPN
NNP
conj
Number=Sing
A300
A300
PROPN
NNP
acl
Tense=Past|VerbForm=Part
know
known
VERB
VBN
case
as
as
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
Zero-G
Zero-G
PROPN
NNP
punct
,
,
PUNCT
,
nsubj:pass
PronType=Rel
which
which
PRON
WDT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
fly
flown
VERB
VBN
case
out
out
ADP
IN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
Bordeaux-Merignac
Bordeaux-Merignac
PROPN
NNP
obl
Number=Sing
airport
airport
NOUN
NN
case
in
in
ADP
IN
nmod
Number=Sing
France
France
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (NP (JJ late) (CD 2004))) (, ,) (NP (NNP Zero) (NNP Gravity) (NNP Corporation)) (VP (VBD became) (NP (NP (NP (DT the) (ADJP (JJ first) (CC and) (JJ only)) (NN company)) (PP (IN in) (NP (DT the) (NNP United) (NNPS States)))) (SBAR (S (VP (TO to) (VP (VB offer) (NP (JJ parabolic) (NN weightlessness) (NNS flights)) (PP (IN to) (NP (DT the) (JJ general) (NN public))))))))) (. .)))
In late 2004, Zero Gravity Corporation became the first and only company in the United States to offer parabolic weightlessness flights to the general public.
case
in
In
ADP
IN
amod
Degree=Pos
late
late
ADJ
JJ
obl
NumForm=Digit|NumType=Card
2004
2004
NUM
CD
punct
,
,
PUNCT
,
compound
Number=Sing
Zero
Zero
PROPN
NNP
compound
Number=Sing
Gravity
Gravity
PROPN
NNP
nsubj
Number=Sing
Corporation
Corporation
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
become
became
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos|NumType=Ord
first
first
ADJ
JJ
cc
and
and
CCONJ
CC
conj
Degree=Pos
only
only
ADJ
JJ
xcomp
Number=Sing
company
company
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
United
United
ADJ
NNP
nmod
Number=Plur
State
States
PROPN
NNPS
mark
to
to
PART
TO
acl
VerbForm=Inf
offer
offer
VERB
VB
amod
Degree=Pos
parabolic
parabolic
ADJ
JJ
compound
Number=Sing
weightlessness
weightlessness
NOUN
NN
obj
Number=Plur
flight
flights
NOUN
NNS
case
to
to
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
general
general
ADJ
JJ
obl
Number=Sing
public
public
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT Each) (NN flight)) (VP (VBZ consists) (PP (IN of) (NP (NP (QP (RB around) (CD 15)) (NNS parabolas)) (, ,) (PP (VBG including) (NP (NP (NNS simulations)) (PP (IN of) (NP (NP (DT the) (NN gravity) (NNS levels)) (PP (IN of) (NP (DT the) (NNP Moon) (CC and) (NNP Mars))))))) (, ,) (CONJP (RB as) (RB well) (IN as)) (NP (JJ complete) (NN weightlessness))))) (. .)))
Each flight consists of around 15 parabolas, including simulations of the gravity levels of the Moon and Mars, as well as complete weightlessness.
det
each
Each
DET
DT
nsubj
Number=Sing
flight
flight
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
consist
consists
VERB
VBZ
case
of
of
ADP
IN
advmod
around
around
ADV
RB
nummod
NumForm=Digit|NumType=Card
15
15
NUM
CD
obl
Number=Plur
parabola
parabolas
NOUN
NNS
punct
,
,
PUNCT
,
case
VerbForm=Ger
include
including
VERB
VBG
nmod
Number=Plur
simulation
simulations
NOUN
NNS
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
gravity
gravity
NOUN
NN
nmod
Number=Plur
level
levels
NOUN
NNS
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
Moon
Moon
PROPN
NNP
cc
and
and
CCONJ
CC
conj
Number=Sing
Mars
Mars
PROPN
NNP
punct
,
,
PUNCT
,
cc
as
as
ADV
RB
fixed
Degree=Pos
well
well
ADV
RB
fixed
as
as
ADP
IN
amod
Degree=Pos
complete
complete
ADJ
JJ
conj
Number=Sing
weightlessness
weightlessness
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (NP (DT The) (JJ first) (CD zero) (NNP G) (NN plane)) (PP (IN in) (NP (NNP Latin) (NNP America)))) (VP (VBZ is) (NP (NP (NP (DT a) (NNP T-39) (NNP Sabreliner)) (VP (VBN nicknamed) (S (NP (NNP CONDOR))))) (, ,) (VP (VBN operated) (PP (IN by) (NP (NP (DT the) (JJ Ecuadorian) (NN space) (NN agency)) (CC and) (NP (DT the) (NNP Ecuadorian) (NNP Air) (NNP Force))))))) (. .)))
The first zero G plane in Latin America is a T-39 Sabreliner nicknamed CONDOR, operated by the Ecuadorian space agency and the Ecuadorian Air Force.
det
Definite=Def|PronType=Art
the
The
DET
DT
amod
Degree=Pos|NumType=Ord
first
first
ADJ
JJ
nummod
NumForm=Word|NumType=Card
zero
zero
NUM
CD
compound
Number=Sing
G
G
PROPN
NNP
nsubj
Number=Sing
plane
plane
NOUN
NN
case
in
in
ADP
IN
compound
Number=Sing
Latin
Latin
PROPN
NNP
nmod
Number=Sing
America
America
PROPN
NNP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
compound
Number=Sing
T-39
T-39
PROPN
NNP
root
Number=Sing
Sabreliner
Sabreliner
PROPN
NNP
acl
Tense=Past|VerbForm=Part
nickname
nicknamed
VERB
VBN
xcomp
Number=Sing
CONDOR
CONDOR
PROPN
NNP
punct
,
,
PUNCT
,
acl
Tense=Past|VerbForm=Part
operate
operated
VERB
VBN
case
by
by
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
Ecuadorian
Ecuadorian
ADJ
JJ
compound
Number=Sing
space
space
NOUN
NN
obl:agent
Number=Sing
agency
agency
NOUN
NN
cc
and
and
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
Ecuadorian
Ecuadorian
ADJ
NNP
compound
Number=Sing
Air
Air
PROPN
NNP
conj
Number=Sing
Force
Force
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (NP (PRP It)) (VP (VBZ has) (VP (VBN operated) (PP (IN since) (NP (NNP May) (, ,) (CD 2008))))) (. .)))
It has operated since May, 2008.
nsubj
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
It
PRON
PRP
aux
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
have
has
AUX
VBZ
root
Tense=Past|VerbForm=Part
operate
operated
VERB
VBN
case
since
since
ADP
IN
obl
Number=Sing
May
May
PROPN
NNP
punct
,
,
PUNCT
,
nummod
NumForm=Digit|NumType=Card
2008
2008
NUM
CD
punct
.
.
PUNCT
.
(ROOT (S (PP (IN On) (NP (NNP June) (CD 19) (CD 2008))) (, ,) (NP (DT this) (NN plane)) (VP (VBD carried) (NP (ADJP (NML (CD 7) (NN year)) (JJ old)) (NNP Jules) (NNP Nader)) (SBAR (IN as) (S (NP (PRP he)) (VP (VBD set) (NP (NP (DT the) (NNP Guinness) (NN world) (NN record)) (PP (IN for) (NP (NP (DT the) (JJS youngest) (NN human)) (VP (VBG being) (VP (VBG flying) (PP (IN in) (NP (NN microgravity)))))))))))) (. .)))
On June 19 2008, this plane carried 7 year old Jules Nader as he set the Guinness world record for the youngest human being flying in microgravity.
case
on
On
ADP
IN
obl
Number=Sing
June
June
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
19
19
NUM
CD
nummod
NumForm=Digit|NumType=Card
2008
2008
NUM
CD
punct
,
,
PUNCT
,
det
Number=Sing|PronType=Dem
this
this
DET
DT
nsubj
Number=Sing
plane
plane
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
carry
carried
VERB
VBD
nummod
NumForm=Digit|NumType=Card
7
7
NUM
CD
obl:npmod
Number=Sing
year
year
NOUN
NN
amod
Degree=Pos
old
old
ADJ
JJ
obj
Number=Sing
Jules
Jules
PROPN
NNP
flat
Number=Sing
Nader
Nader
PROPN
NNP
mark
as
as
SCONJ
IN
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
set
set
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
Guinness
Guinness
PROPN
NNP
compound
Number=Sing
world
world
NOUN
NN
obj
Number=Sing
record
record
NOUN
NN
case
for
for
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Sup
young
youngest
ADJ
JJS
obl
Number=Sing
human
human
NOUN
NN
cop
VerbForm=Ger
be
being
AUX
VBG
acl
VerbForm=Ger
fly
flying
VERB
VBG
case
in
in
ADP
IN
obl
Number=Sing
microgravity
microgravity
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (NNP Nader)) (VP (VBD worked) (PP (IN on) (NP (NP (DT an) (NN hydrodynamics) (NN experiment)) (VP (VBN designed) (PP (IN by) (NP (PRP$ his) (NN brother))))))) (. .)))
Nader worked on an hydrodynamics experiment designed by his brother.
nsubj
Number=Sing
Nader
Nader
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
work
worked
VERB
VBD
case
on
on
ADP
IN
det
Definite=Ind|PronType=Art
a
an
DET
DT
compound
Number=Sing
hydrodynamic
hydrodynamics
NOUN
NN
obl
Number=Sing
experiment
experiment
NOUN
NN
acl
Tense=Past|VerbForm=Part
design
designed
VERB
VBN
case
by
by
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl:agent
Number=Sing
brother
brother
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (PP (VBG According) (PP (IN to) (NP (NML (JJ former) (JJ Reduced) (NML (NNP Gravity) (NNP Research) (NNP Program)) (NN director)) (NNP John) (NNP Yaniec)))) (, ,) (NP (NN anxiety)) (VP (VBZ contributes) (ADVP (JJS most)) (PP (IN to) (NP (NP (NNS passengers) (POS ')) (NN airsickness)))) (. .)))
According to former Reduced Gravity Research Program director John Yaniec, anxiety contributes most to passengers' airsickness.
case
ExtPos=ADP|VerbForm=Ger
accord
According
VERB
VBG
fixed
to
to
ADP
IN
amod
Degree=Pos
former
former
ADJ
JJ
amod
Degree=Pos
reduced
Reduced
ADJ
JJ
compound
Number=Sing
Gravity
Gravity
PROPN
NNP
compound
Number=Sing
Research
Research
PROPN
NNP
compound
Number=Sing
Program
Program
PROPN
NNP
obl
Number=Sing
director
director
NOUN
NN
flat
Number=Sing
John
John
PROPN
NNP
flat
Number=Sing
Yaniec
Yaniec
PROPN
NNP
punct
,
,
PUNCT
,
nsubj
Number=Sing
anxiety
anxiety
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
contribute
contributes
VERB
VBZ
obj
Degree=Sup
most
most
ADJ
JJS
case
to
to
ADP
IN
nmod:poss
Number=Plur
passenger
passengers
NOUN
NNS
case
's
'
PART
POS
obl
Number=Sing
airsickness
airsickness
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (S (NP (NNP Yaniec)) (VP (VBZ gives) (NP (NP (DT a) (JJ rough) (NN estimate) (WHNP (IN that))) (PP (IN of) (NP (NNS passengers)))))) (, ,) (`` ") (NP (CD one) (NN third)) (-LRB- [) (VP (VB become) (ADJP (-RRB- ]) (RB violently) (JJ ill)) (, ,) (NP (NP (DT the) (JJ next) (JJ third)) (ADJP (RB moderately) (JJ ill))) (, ,) (CC and) (VP (NP (DT the) (JJ final) (JJ third)) (RB not) (ADVP (IN at) (DT all)))) (. .) ('' ")))
Yaniec gives a rough estimate that of passengers, " one third [become] violently ill, the next third moderately ill, and the final third not at all . "
nsubj
Number=Sing
Yaniec
Yaniec
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
give
gives
VERB
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
rough
rough
ADJ
JJ
obj
Number=Sing
estimate
estimate
NOUN
NN
mark
that
that
SCONJ
IN
case
of
of
ADP
IN
obl
Number=Plur
passenger
passengers
NOUN
NNS
punct
,
,
PUNCT
,
punct
"
"
PUNCT
``
nummod
NumForm=Word|NumType=Card
one
one
NUM
CD
nsubj
NumForm=Word|NumType=Frac|Number=Sing
third
third
NOUN
NN
punct
[
[
PUNCT
-LRB-
appos
VerbForm=Inf
become
become
VERB
VB
punct
]
]
PUNCT
-RRB-
advmod
violently
violently
ADV
RB
xcomp
Degree=Pos
ill
ill
ADJ
JJ
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
next
next
ADJ
JJ
conj
Degree=Pos|NumType=Ord
third
third
ADJ
JJ
advmod
moderately
moderately
ADV
RB
conj
Degree=Pos
ill
ill
ADJ
JJ
punct
,
,
PUNCT
,
cc
and
and
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
final
final
ADJ
JJ
conj
Degree=Pos|NumType=Ord
third
third
ADJ
JJ
advmod
not
not
PART
RB
case
at
at
ADP
IN
obl
all
all
DET
DT
punct
.
.
PUNCT
.
punct
"
"
PUNCT
''
(ROOT (S (NP (NN Vomiting)) (VP (VBZ is) (VP (VBN referred) (PRT (IN to)) (PP (IN as) (NP (DT a) (`` ") (NN kill) ('' "))))) (. .)))
Vomiting is referred to as a " kill ".
nsubj:pass
Number=Sing
vomiting
Vomiting
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Tense=Past|VerbForm=Part|Voice=Pass
refer
referred
VERB
VBN
obl
to
to
ADP
IN
case
as
as
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
punct
"
"
PUNCT
``
obl
Number=Sing
kill
kill
NOUN
NN
punct
"
"
PUNCT
''
punct
.
.
PUNCT
.
(ROOT (S (NP (NML (JJ Commercial) (NN operator)) (NNP Zero) (NNP Gravity) (NNP Corporation)) (VP (VBZ claims) (SBAR (S (NP (NP (PRP$ their) (NN tourist) (NNS rides)) (PP (IN with) (NP (QP (RB up) (IN to) (CD 15)) (NNS parabolas)))) (VP (VBP are) (ADJP (RB much) (RBR less) (JJ traumatic)) (PP (VBN compared) (PP (IN to) (NP (NP (DT the) (JJ typical) (NN research) (NN flight)) (PP (IN with) (NP (QP (CD 40) (CD 80)) (NNS parabolas)))))))))) (. .)))
Commercial operator Zero Gravity Corporation claims their tourist rides with up to 15 parabolas are much less traumatic compared to the typical research flight with 40 80 parabolas.
amod
Degree=Pos
Commercial
Commercial
ADJ
JJ
compound
Number=Sing
operator
operator
NOUN
NN
compound
Number=Sing
Zero
Zero
PROPN
NNP
compound
Number=Sing
Gravity
Gravity
PROPN
NNP
nsubj
Number=Sing
Corporation
Corporation
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
claim
claims
VERB
VBZ
nmod:poss
Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs
their
their
PRON
PRP$
compound
Number=Sing
tourist
tourist
NOUN
NN
nsubj
Number=Plur
ride
rides
NOUN
NNS
case
with
with
ADP
IN
advmod
up
up
ADV
RB
fixed
to
to
ADP
IN
nummod
NumForm=Digit|NumType=Card
15
15
NUM
CD
nmod
Number=Plur
parabola
parabolas
NOUN
NNS
cop
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
advmod
much
much
ADV
RB
advmod
Degree=Cmp
less
less
ADV
RBR
ccomp
Degree=Pos
traumatic
traumatic
ADJ
JJ
advcl
Tense=Past|VerbForm=Part
compare
compared
VERB
VBN
case
to
to
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
typical
typical
ADJ
JJ
compound
Number=Sing
research
research
NOUN
NN
obl
Number=Sing
flight
flight
NOUN
NN
case
with
with
ADP
IN
compound
NumForm=Digit|NumType=Card
40
40
NUM
CD
nummod
NumForm=Digit|NumType=Card
80
80
NUM
CD
nmod
Number=Plur
parabola
parabolas
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (NP (NN Vomit) (NN comet)) (VP (MD may) (ADVP (RB also)) (VP (VB refer) (PP (IN to) (NP (NP (DT any) (JJ other) (NN form)) (PP (IN of) (NP (NP (NP (NN transportation)) (SBAR (WHPP (IN on) (WHNP (WDT which))) (S (NP (NNS riders)) (VP (VBP are) (VP (VBN said) (S (VP (TO to) (VP (VB become) (ADJP (JJ nauseated) (CC or) (JJ seasick)))))))))) (, ,) (PP (JJ such) (IN as) (NP (NP (DT a) (NN bus)) (SBAR (WHNP (WDT that)) (S (VP (VBZ transports) (NP (NP (JJ late-night) (NNS revelers)) (CC or) (NP (NP (DT a) (JJ fast) (NN boat)) (PP (JJ such) (IN as) (NP (DT a) (JJ high-speed) (NN catamaran)))))))))))))))) (. .) (. .)))
Vomit comet may also refer to any other form of transportation on which riders are said to become nauseated or seasick, such as a bus that transports late-night revelers or a fast boat such as a high-speed catamaran . .
compound
Number=Sing
vomit
Vomit
NOUN
NN
nsubj
Number=Sing
comet
comet
NOUN
NN
aux
VerbForm=Fin
may
may
AUX
MD
advmod
also
also
ADV
RB
root
VerbForm=Inf
refer
refer
VERB
VB
case
to
to
ADP
IN
det
any
any
DET
DT
amod
Degree=Pos
other
other
ADJ
JJ
obl
Number=Sing
form
form
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
transportation
transportation
NOUN
NN
case
on
on
ADP
IN
obl
PronType=Rel
which
which
PRON
WDT
nsubj:pass
Number=Plur
rider
riders
NOUN
NNS
aux:pass
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
say
said
VERB
VBN
mark
to
to
PART
TO
xcomp
VerbForm=Inf
become
become
VERB
VB
xcomp
Degree=Pos
nauseated
nauseated
ADJ
JJ
cc
or
or
CCONJ
CC
conj
Degree=Pos
seasick
seasick
ADJ
JJ
punct
,
,
PUNCT
,
case
Degree=Pos
such
such
ADJ
JJ
fixed
as
as
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
nmod
Number=Sing
bus
bus
NOUN
NN
nsubj
PronType=Rel
that
that
PRON
WDT
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
transport
transports
VERB
VBZ
amod
Degree=Pos
late-night
late-night
ADJ
JJ
obj
Number=Plur
reveler
revelers
NOUN
NNS
cc
or
or
CCONJ
CC
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
fast
fast
ADJ
JJ
conj
Number=Sing
boat
boat
NOUN
NN
case
Degree=Pos
such
such
ADJ
JJ
fixed
as
as
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
high-speed
high-speed
ADJ
JJ
nmod
Number=Sing
catamaran
catamaran
NOUN
NN
punct
.
.
PUNCT
.
punct
.
.
PUNCT
.
Vomit Comet is a nickname for any airplane that briefly provides a nearly weightless environment in which to train astronauts, conduct research, and film motion pictures. Versions of such airplanes have in the past been operated by NASA's Reduced Gravity Research Program since 1973, where the unofficial nickname originated. NASA then adopted the official nickname Weightless Wonder, for publication. The airplane produces weightlessness by following a parabolic vertical flight path. A parabolic flight path is the same path that would be taken by an object in free fall, such as a cannonball fired into the air. As a result, the aircraft does not exert any g-force on its contents, so the contents have zero apparent weight relative to the aircraft. The aircraft heads upward at an angle of 45 degrees. As soon as the pilot begins the rotation into the parabolic trajectory, weightlessness is achieved. This lasts all the way " up-and-over the hump ", until the craft reaches a declined angle of 30 degrees. At this point, the craft has lost a significant amount of altitude, and must begin to pull into a hard upward turn. The forces are then roughly twice that of gravity on the way down, at the bottom, and up again. This lasts all the way until the aircraft is again halfway up its upward trajectory, and the pilot again initiates the zero-g parabola. In general, this aircraft is used to train astronauts in zero-g maneuvers, giving them about 25 seconds of weightlessness out of 65 seconds of flight. This often produces nausea due to airsickness, especially in novices, giving the plane its nickname. NASA has flown parabolic flights on various aircraft for many years. In 1959, Project Mercury astronauts trained in a C-131 Samaritan aircraft, which was dubbed the " Vomit Comet ". Twin KC-135 Stratotankers were used until December 2004 and have since been retired. One, a KC-135A known as NASA 930, was also used by Universal Pictures and Imagine Entertainment for filming scenes involving weightlessness in the movie Apollo 13; that airplane was retired in 2000 and is now on display at Ellington Field, near the Johnson Space Center. It is estimated to have flown over 58,000 parabolas. The other (N931NA or NASA 931) made its final flight on October 29, 2004, and is permanently stored in the Pima Air &amp; Space Museum in Tucson, Arizona. In 2005, NASA replaced the airplane with a McDonnell Douglas C-9B Skytrain II that was formerly owned by KLM Royal Dutch Airlines and the United States Navy. That same year, the Zero-Gravity Corporation, a commercial parabolic flight operator which offers parabolic flights to both researchers and adventure tourists, began flying parabolic flights for NASA with Boeing 727 jets. Since 1984, the ESA and the CNES have flown similar reduced-gravity missions in a variety of airplanes, including NASA's KC-135, a Caravelle, an Ilyushin IL-76 MDK, and, most recently, an Airbus A300 known as the Zero-G, which is flown out of the Bordeaux-Merignac airport in France. In late 2004, Zero Gravity Corporation became the first and only company in the United States to offer parabolic weightlessness flights to the general public. Each flight consists of around 15 parabolas, including simulations of the gravity levels of the Moon and Mars, as well as complete weightlessness. The first zero G plane in Latin America is a T-39 Sabreliner nicknamed CONDOR, operated by the Ecuadorian space agency and the Ecuadorian Air Force. It has operated since May, 2008. On June 19 2008, this plane carried 7 year old Jules Nader as he set the Guinness world record for the youngest human being flying in microgravity. Nader worked on an hydrodynamics experiment designed by his brother. According to former Reduced Gravity Research Program director John Yaniec, anxiety contributes most to passengers' airsickness. Yaniec gives a rough estimate that of passengers, " one third [become] violently ill, the next third moderately ill, and the final third not at all . " Vomiting is referred to as a " kill ". Commercial operator Zero Gravity Corporation claims their tourist rides with up to 15 parabolas are much less traumatic compared to the typical research flight with 40 80 parabolas. Vomit comet may also refer to any other form of transportation on which riders are said to become nauseated or seasick, such as a bus that transports late-night revelers or a fast boat such as a high-speed catamaran . .