For six months in 1181, a dying star left a mark in the night sky. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from ...

A sparkling new supernova has appeared in the night sky, and a telescope atop Mauna Kea in Hawaii was perfectly poised to capture the aftermath of the cosmic burst. The supernova was first spotted ...

These before and after shots of the Cigar Galaxy (M82) by amateur astronomer Fred Hermann illustrate the dramatic emergence of a new supernova. The image at left was captured on Nov. 28, 2013. The ...

One of the closest star explosions in nearly 27 years was discovered this week by students and staff at the University of College London, and the supernova can be easily seen by stargazers equipped ...

Look out for more than fireworks this summer. A massive star in the arm of the Pinwheel Galaxy (M101) has exploded — aka gone supernova — and its fiery death throes, Astronomy reports, are expected to ...

Forbes contributors publish independent expert analyses and insights. I cover the history of science and exploration. Over a thousand years ago today, people around the world looked up into the night ...

A star in its explosive death throes lights up a corner of the night sky, and it's bright enough to spot on your own. Eric Mack has been a CNET contributor since 2011. Eric and his family live 100% ...

There’s breaking a record, and then there’s blowing it to smithereens. Astronomers using relatively small telescopes around the globe have spotted the brightest supernova ever seen, shining about 20 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. For six months in ...

At 12 million light-years away, a new supernova that suddenly appeared in a nearby galaxy this week is the closest star explosion to be spotted from Earth in at least 20 years, so it's no surprise ...