The Earth gets 100 tons heavier every day due to falling space dust.
673
41% of the moon is not visible from earth at any time.
103
It would take more than 150 years to drive a car to the sun.
569
Some asteroids have other asteroids orbiting them.
131
Astronauts get taller when they are in space.
224
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Pluto is smaller than Russia.
9