The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15