In March, American astronaut Scott Kelly and Russian Cosmonaut Mikhail Kornienko will partner up on seven research experiments on the International Space Station (ISS) for the duration of one year.

NEW YORK (WABC) -- You would expect a trip to space to be transformative, but NASA says it can lead to permanent DNA changes. The space agency studied the DNA of twin astronauts Scott and Mark Kelly.

Twin brothers and former NASA astronauts Mark and Scott Kelly have each flown four missions and were part of NASA's twin study to research the impact of spaceflight on the human body. Hours before ...

Over the summer, twin astronauts Scott and Mark Kelly (perhaps unintentionally) offered their identical genetic makeups to science, suggesting that they be the subject of experiments designed to test ...

Traveling to space is brutal on the body. NASA’s pioneering study of the identical twin astronauts Mark and Scott Kelly tracked signals of aging in both men while Mark remained on Earth and Scott ...

Vox Members got to read this story first. Support independent journalism and get exclusive access to stories like this by becoming a Vox Member today. One day, Mars might become a home to humans. But ...

Created in 2000 by Bezos, Amazon’s founder, Blue Origin already holds a NASA contract for the third moon landing by ...

As NASA prepared astronauts for its second mission into space, National Geographic had exclusive behind-the-scenes access for ...

Traveling to space is brutal on the body. Spaceflight can cause astronauts’ bones to lose density, their brain and eye nerves to swell, and their genes to change expression. Research suggests spending ...