It 'snows' metal on Venus.
13
Summer on Uranus lasts for 21 years.
358
A comet's tail always points away from the sun.
2
The earth travels through space at 660,000 miles per hour.
189
Pluto is smaller than Russia.
9
Astronauts get taller when they are in space.
224
Mars had an oxygen-rich atmosphere around 4 billion years ago
13