Summer on Uranus lasts for 21 years.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The earth is .02 degrees hotter during a full moon.
157
More than 20 million meteoroids enter Earth's atmosphere every day.
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Astronauts cannot burp in space.
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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219