NASA's Solar Dynamics Observatory has discovered new characteristics of solar flares - with great timing, as one's due to hit Earth tomorrow.
Put on your hard hats, everybody: NASA's warning that a defunct satellite is set to hit the earth sometime in the next six weeks.
A new report published by the National Research Council recommends that NASA should "take steps" to maintain a highly trained astronaut corps - even as the United States enters an extended post-shuttle era.
Astrophysicist Rosanne Di Stefano compares it to the Hollywood blockbuster 'Speed' - a newly-described type of star that's destined to explode if it slows down.
NASA is preparing for a number of worst-case scenarios that could leave the International Space Station (ISS) without a crew for an extended period of time.
A nostalgic NASA - clearly pining for the glory days of its manned space program - has released a slew of new pictures depicting the Apollo 12, 14 and 17 landing sites.
A spaceship financed by Amazon founder Jeff Bezos was lost during a test flight late last week.
A recently published report warns that space junk poses a clear and present danger to orbiting satellites and the International Space Station (ISS).
A team of European astronomers have discovered a star that by rights shouldn't exist - it's simply not dense enough for current models to explain its formation.
Astronomers at Rice University have released a movie created from still Hubble Telescope images that shows energetic jets of glowing gas being ejected from young stars.
The recent crash of an ISS-bound space freighter has prompted Russia to consider the possibility of ending its permanent human presence in space.
Part of the difficulty of studying asteroids is that they just won't keep still. NASA's current dawn mission to study Vesta, for instance, has taken eight years so far and cost $360 million even before it launched.
The recent disintegration of an ISS-bound space freighter was apparently caused by a malfunctioning gas generator located in the Soyuz carrier rocket's third stage engine.
Astrophysicists have for the first time created a computer model of galaxy formation that results in a spiral galaxy like our own.
Engineers from NASA and the US Department of Energy (DOE) are working on a suitcase-sized nuclear reactor for use on the moon and other planets.
NASA is warning that astronauts may be forced to temporarily abandon the International Space Station (ISS) if a recent space freighter crash prevents Russia from ferrying a fresh crew to the station.
DARPA has released video footage of the Falcon HTV-2 flight earlier this month, which ended unceremoniously after just three minutes when it lost contact with the vehicle. And, guess what, DARPA says the flight was a great success.
Astronauts on the way to Mars could munch on space-grown lettuce, strawberries and carrots, a NASA scienstist says.
Samples brought back from the Itokawa asteroid indicate that it's made up of the remnants of a much larger body.
Berkeley scientists this week discovered a new supernova, closer to Earth than any seen in the last 40 years, and believe they've spotted it within hours of its explosion.