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
Only 55% of Americans know that the sun is a star.
986
If two pieces of metal touch in space, they become permanently stuck together.
808
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The Earth gets 100 tons heavier every day due to falling space dust.
673