'As they approach the sun, some of these develop tails as long as 100 million miles'
a comet
ASTRONOMY: As they approach the sun, some of these develop tails as long as 100 million miles
As they approach the sun, some of these develop tails as long as 100 million miles
As they approach the sun, some of these develop tails as long as 100 million miles
ASTRONOMY
a comet
ASTRONOMY