If two pieces of metal touch in space, they become permanently stuck together.
808
The earth travels through space at 660,000 miles per hour.
189
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Astronauts cannot burp in space.
232
The heart of an astronaut actually gets smaller when in outer space.
216
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
It takes eight and a half minutes for light to get from the sun to earth.
159
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12