A new video shows the evolution of Kepler's Supernova Remnant using data from NASA's Chandra X-ray Observatory captured over ...

In 1181 AD, a bright "guest star" was observed to linger in the sky for around six months. Nearly 850 years later, the likely ...

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

The space agency pieced together the evolution of Kepler’s Supernova Remnant from the data of NASA’s Chandra X-ray ...

Astronomers have spotted a supernova in the making. This artist'??s rendering shows the central part of the planetary nebula Henize 2-428, consisting of two white dwarf stars that are expected to draw ...