You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

Astronaut to try for longest US space flight record

Scott Kelly is the twin brother of Gabrielle Giffords’s husband, Mark.

Scott Kelly is the twin brother of Gabrielle Giffords’s husband, Mark.

CAPE CANAVERAL, Fla. — A former space shuttle commander whose twin brother is married to former representative Gabrielle Giffords will attempt the longest space flight by an American.

NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko will spend a year aboard the International Space Station beginning in 2015.

Continue reading below

Both countries’ space agencies announced the names of the veteran space fliers on Monday. The extended mission was approved almost two months ago to provide a medical foundation for future missions around the moon, as well as far-flung trips to asteroids and Mars.

Both men already have lived aboard the space station for six months. NASA wanted experienced space station astronauts to streamline the amount of training necessary for a one-year stint.

Kelly’s identical twin, Mark Kelly, retired from the astronaut corps last year and moved to Tucson, his wife’s hometown. The former representative was critically wounded in an assassination attempt in January 2011, while Scott Kelly was living aboard the space station.

The longest an American lived at the space station was seven months, several years back.

A Russian, Valery Polyakov, logged nearly 15 continuous months aboard the old Mir space station in the mid-1990s.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week