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NASA's Chandra X-ray Observatory captures the first-ever X-ray of an exoplanet passing in front of its parent star in a system that is 63 light-years from Earth.
It takes a mighty wind to keep stars from forming. Researchers have found one in a galaxy far, far away -- and NASA made a short movie about it.
An X-ray telescope designed to hunt for black holes takes a look at the sun and helps NASA deliver an intense portrait of our closest star.
One of the most powerful black holes in the observable universe has been revealed by NASA's Chandra X-Ray Observatory.
Strange signals picked up by the radio telescope pointed towards the stars in Parkes, Australia have a rather more mundane origin.
To celebrate the release of "Age of Ultron," a type of star that will "live fast and die hard" is creating a nebula fitting for a Norse god. (Well, not really for that reason.)
To celebrate the work being done by its Solar Dynamics Observatory, NASA has released a video of highlights on the fifth anniversary of its launch.
The Sphere instrument on the VLT in Chile peers with all its might into the blackness around a binary star system and returns a surprise for astronomers.
Its root cause still undetermined, a huge X-ray flare from the Milky Way's center has made NASA scientists sit up and take notice.
The discovery of a new unusually bright dead star leads astronomers to question assumptions about a type of cosmic radiation -- and pulsars themselves.