NASA astronauts Suni Williams and Butch Wilmore are heading back to Earth, after a weeklong test flight turned into a nine-month mission aboard the International Space Station.

A NASA astronaut captured a fascinating weather phenomenon that still has scientists scratching their heads. Nichole Ayers is ...

NASA astronauts Sunita Williams and Barry Wilmore, who have been stranded on the International Space Station (ISS) for the past nine months, are finally preparing for their return to Earth ...

NASA Astronaut Sunita Williams gave a thumbs up to graduates during Merrimack College's School of Arts and Sciences commencement ceremony in North Andover on May 15. Craig F. Walker/Globe Staff ...