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.
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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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Earth is the only planet in our solar system that's not named after a god or goddess.
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Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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