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Scott Kelly Returns to Earth Taller

After spending most of a calendar year in space, NASA astronaut Scott Kelly is back on Earth.Now that his year-long space mission has come to an end, medical examiners have determined he is two inches taller than his identical brother Mark.A retired NASA astronaut himself, Mark is now longer entirely identical to Scott due to gravity.As the disks of the spinal column are compressed by gravity within Earth's atmosphere, they are able to expand due to it's absence while in orbit.

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