Narrator: This is astronaut Scott Kelly back in 2015 ... and DNA was back on Earth: his identical twin, Mark Kelly. Scott and Mark are the only twin NASA astronauts in history.

A former fighter pilot and Nasa astronaut who has flown 20 million miles in space is a top contender to become Kamala Harris’s running mate. Mark Kelly ... his identical twin brother, Scott ...

For example, researchers found Scott’s telomeres were longer and his levels of DNA methylation were lower in comparison to his twin ... while Mark only experienced minor fluctuations. In both cases, ...

Mark Kelly was listed by betting ... he was in the same class as his identical twin brother, Scott. Before his days at NASA, Kelly was a U.S. Navy pilot. He joined the service in 1986, the same ...

WEST ORANGE, NJ — Will Sen. Mark Kelly make the cut as Kamala Harris’ vice-presidential running mate? It’s still too early to tell – but West Orange’s hero astronaut-turned-senator says ...

But retired NASA astronaut Mark Kelly - a former Navy pilot, combat veteran, four-time space-flyer, and the identical twin brother of fellow former astronaut Scott Kelly - doesn't support it ...