Pluto is smaller than Russia.
9
A comet's tail always points away from the sun.
2
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Astronauts get taller when they are in space.
224
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth travels through space at 660,000 miles per hour.
189