Astronaut's DNA is different after space travel, NASA finds

Scott Kelly's DNA no longer matches that of his twin brother, Mark, after a year spent on the International Space Station.
0:39 | 03/15/18

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Transcript for Astronaut's DNA is different after space travel, NASA finds
This is a very cool story new this morning you it expected trip to space to be transformative but NASA says it could lead to permanent DNA changes. That after the space agency study the DNA of twit astronauts Scott and mark Kelly. As Scott spent a year in the International Space Station while mark remain on earth. Two years after the fact now NASA says stocks DNA changed 7%. Meaning technically the identical twins are no longer identical twins one how well you know the old saying they say if if you're debacle twins and white W commits a murder they can't tell which one based on DNA evidence not like that. Now let's hope anyone does.

This transcript has been automatically generated and may not be 100% accurate.

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