An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Summer on Uranus lasts for 21 years.
358
The Earth gets heavier each day by tons, as meteoric dust settles on it.
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Astronauts get taller when they are in space.
224
The earth is .02 degrees hotter during a full moon.
157
A 100-pound person on Earth would weigh 38 pounds on Mars.
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41% of the moon is not visible from earth at any time.
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