Hubble Space Telescope Pinpoints 'Monster' Stars
Scientists combined images from a camera with ultraviolet light measurements from a spectrograph to identify nine stars more than 100 times as massive as the sun.
Space
Wanted: Female German Astronauts
Aerospace engineer Claudia Kessler is searching for Germany's first female astronaut. The country's previous 11 astronauts were all men, which she says highlights German sexism in the sciences.
How Can Satellite Images Unlock Secrets To Our Hidden Past?
Sarah Parcak is a pioneer in space archaeology. She describes her method of using satellite images to locate lost ancient sites.
After A Year In Space, Astronaut Scott Kelly To Retire In April
Recently returned from a historic 340-day off-planet mission, Kelly announced Friday he will retire from NASA on April 1, but still continue to participate in research related to his experiment.
WATCH: Shadow Of The Moon Crosses Earth During Solar Eclipse
The total solar eclipse on March 9 wasn't visible anywhere in North America, but Indonesia got a perfect view. Now you can see the eclipse from the other side ... that is, the view from space.
After Equipment Woes, NASA Mission To Mars Is Rescheduled For 2018
The InSight mission, which would send a lander to detect marsquakes and study the planet's interior, was scheduled for this month. It has been delayed because a pivotal piece of equipment was flawed.
Hubble Sees A Galaxy 13.4 Billion Years In The Past, Breaking Distance Record
Looking from Earth, it's in an area just above where the handle of the Big Dipper meets its cup — or, if you prefer, it's just above Ursa Major's rump.
Hubble Space Telescope Photographs Oldest Galaxy Ever Seen
The Hubble Space Telescope photographed what scientists say appears to be the oldest galaxy ever seen. It shows a collection of stars that formed 400 years after the Big Bang.
'Everybody Stretches' Without Gravity: Mark Kelly Talks About NASA's Twins Study
Kelly says his twin brother, Scott Kelly, who just returned to Earth after 340 days in space, was temporarily 2 inches taller. NASA is studying the pair to explore what spaceflight does to the body.
WATCH: Astronauts Back Home After A Year In Space
NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko spent most of a year on the International Space Station. Their landing brings an epic mission to an end.