Summer on Uranus lasts for 21 years.
358
It 'snows' metal on Venus.
13
Astronauts get taller when they are in space.
224
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth gets 100 tons heavier every day due to falling space dust.
673
Sound doesn't travel in space.
255
The earth travels through space at 660,000 miles per hour.
189