In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The earth travels through space at 660,000 miles per hour.
189
The light hitting the earth right now is 30 thousand years old.
163
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
Summer on Uranus lasts for 21 years.
358
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147