Astronauts get taller when they are in space.
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Lightning strikes about 6,000 times per minute on this planet!
158
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
More than 20 million meteoroids enter Earth's atmosphere every day.
139
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
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Astronauts cannot burp in space.
232