In 1604, a new star appeared in the night sky that was much brighter than Jupiter and dimmed over several weeks. This event was witnessed by sky watchers including the famous astronomer Johannes ...

The scene witnessed by Johannes Kepler after sunset on Oct. 17, 1604. While he wasn't the first to see the supernova, Kepler studied it like no one else. To recognize his detailed observations, we now ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

A new video shows the evolution of Kepler's Supernova Remnant using data from NASA's Chandra X-ray Observatory captured over more than two and a half decades. Subscribe to our newsletter for the ...

CC0 Usage Conditions ApplyClick for more information. Astronomers have used NASA’s Chandra X-ray Observatory to record material blasting away from the site of an exploded star at speeds faster than 20 ...

CC0 Usage Conditions ApplyClick for more information. Astronomers have clocked debris from an exploded star moving at over 20 million miles an hour – about 25,000 times the speed of sound on Earth.

One of the most famous exploding stars ever recorded by humanity may have been an invader from another galaxy, according to a new analysis of its movements. What is more, alien stars like this might ...

An explosion seen in the cosmos in the early 1600s may actually be an "Alien Type Ia supernova", according to a new paper. In October 1604, astronomer and mathematician Johannes Kepler spotted a new ...