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  • NASA astronaut Scott Kelly misses more than people as he orbits the Earth for a year.

    01:47

  • A huge belt of space debris orbits Earth- a single piece could be fatal.

    01:59

  • We dream of traveling across the solar system. But what compels us to reach for the stars?

    00:37

  • Making dinner in space can be tricky- everything floats in this world of zero gravity!

    00:55

  • The ISS is the most expensive and complex object humans have ever built.

    01:31

  • As he heads into space, Scott Kelly must say goodbye to everything he knows and loves.

    00:43

  • Scott Kelly stays connected to people on Earth with Twitter and Instagram. #YearinSpace

    00:40

  • Twin astronauts Scott and Mark Kelly are ideal subjects for studying the effects of space.

    02:11

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