'In 2006 a pulse of this type of beam sent a message a record 15 million miles to the MESSENGER spacecraft'
a laser beam
CUTTING-EDGE SCIENCE: In 2006 a pulse of this type of beam sent a message a record 15 million miles to the MESSENGER spacecraft
In 2006 a pulse of this type of beam sent a message a record 15 million miles to the MESSENGER spacecraft
In 2006 a pulse of this type of beam sent a message a record 15 million miles to the MESSENGER spacecraft
CUTTING-EDGE SCIENCE
a laser beam
CUTTING-EDGE SCIENCE