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.
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When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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A comet's tail always points away from the sun.
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Summer on Uranus lasts for 21 years.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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