The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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Astronauts get taller when they are in space.
224
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The earth travels through space at 660,000 miles per hour.
189
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7