A comet's tail always points away from the sun.
2
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The sun is 330,330 times larger than the earth!
190
The heart of an astronaut actually gets smaller when in outer space.
216
Today's top fuel dragsters take off with more force than the space shuttle.
120
The Earth gets 100 tons heavier every day due to falling space dust.
673