If you go on a journey to Mars and get into deep space, there is several hundred times, maybe 300 times the radiation.

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• Scott Kelly:

  Just like the bones and muscles, the heart is designed to work in one gravity here on Earth, so whe

• Scott Kelly:

  I don't mean to say it's not fresh on the space station, but there's nothing like new, cold air com

• Scott Kelly:

  I feel more like an environmentalist since I've been up here. There are parts of the Earth that are

• Scott Kelly:

  I've flown in space four times now, so it's going to be hard in that respect, but I certainly look

• Scott Kelly:

  We don't do laundry because that requires a lot of water, and water's at a premium up here. Plus, i

• Scott Kelly:

  Now, space has its own unique smell. So whenever a vehicle docks, or if guys are out doing a spacew

• Scott Kelly:

  As far as the sounds on the space station, it's pumps, fans, motors, certain modules are louder tha

• Scott Kelly:

  If we're going to go farther from Earth, to Mars or somewhere else someday, we have to have a good

• Scott Kelly:

  The earth is a beautiful planet.

• Scott Kelly:

  The planet will get better; it's us that won't be here because we'll destroy the environment.