Twin Galaxies - a podcast by Jeff Cannata/Anthony Carboni

A new study from NASA has found that astronaut Scott Kelly's genes are no longer identical to those of his identical twin after spending a year in space. Preliminary results from NASA's Twins Study found that seven percent of Kelly's genes no longer match those of his twin, Mark. Scott Kelly spent one year aboard the International Space Station during the study, while his brother remained on Earth. Jeff and Anthony discuss how this story might have been mutated.

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