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

Prague, October 1604. The then 34-year-old astronomer Johannes Kepler was looking at the constellation of Ophiuchus, and he ...

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

The scenes track the furious expansion of Kepler’s Supernova Remnant, the glowing remains of a star first spotted in 1604 by ...

An international team of astronomers has achieved a first in probing the early universe, using the James Webb Space Telescope ...

NASA has released its longest-ever time-lapse from the Chandra X-ray Observatory, capturing the expanding remains of Keplers ...

Scientists have detected the most distant supernova ever seen, exploding when the universe was less than a billion years old.

The gravity of a distant galaxy warped space and magnified the light of a faraway supernova, potentially revealing tantalizing details about stellar explosions, as well as an unseen population of ...

A dozen luminous blue outbursts were thought to be unusual supernovae. A new outburst, the brightest yet, suggests it's ...

When a massive star runs out of fuel and approaches the end of its life, it explodes in a huge outpouring of energy called a supernova. These events can be so bright that they outshine entire galaxies ...

The era of stationary spacecraft may soon be over. Portal Space Systems, a company headed by propulsion expert Jeff Thornburg, is looking to help usher in a new renaissance in in-space transportation ...