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

NASA has released an unprecedented time-lapse video showing the evolution of Kepler’s Supernova Remnant, a cosmic relic of a massive stellar explosion. Captured by the Chandra X-ray Observatory over ...

The space agency pieced together the evolution of Kepler’s Supernova Remnant from the data of NASA’s Chandra X-ray Observatory over 25 years.

The shockwave has traveled half a light-year.

The stunning time-lapse was created using data from NASA’s Chandra X-ray Observatory.

A new video provides a front-row seat to a cosmic drama that has been playing out for centuries. Since 1604, when astronomers around the world recorded a new 'star' that appeared in the sky, humans ...

This timelapse video using data from NASA’s James Webb Space Telescope highlights the evolution of one light echo in the vicinity of the supernova remnant Cassiopeia A.

Situated around 17,000 light-years from Earth within the Milky Way Galaxy, the supernova remnant is close enough for NASA’s ...