A supernova is a stellar explosion, which occurs when the lives of some really massive stars come to an end. In this violent epilogue, the star expels the material from its outer layers by means of a ...

When stars die, they spread the elements they’ve created in their cores out to space. But other objects and processes in space also create elements. Eventually, that “star stuff” scatters across the ...

Two years ago astronomers for the first time observed the collision of two neutron stars, which created gravitational waves and light and created heavy elements such as gold, platinum and lead. These ...

Not all stars are created equally. Astronomers believe that the first stars to form after the Big Bang were mostly made of ...

Scientists have turned to artificial intelligence (AI) to better understand why some dead stellar remnants called white dwarf stars explode. These energetic explosions, called Type Ia supernovas, ...

Astronomy is increasingly becoming an online affair. Recent discoveries of interstellar Comet 3I/ATLAS and R2 SWAN have ...

The exploded star Tycho, called the Tycho Supernova. (It's not the star recently observed exploding, but a past supernova event.) Credit: NASA / CXC / RIKEN and GSFC / T. Sato et al. / Optical: DSS ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The James Webb ...

When a star dies in a massive explosion, it leaves behind a supernova remnant - an expanding cloud of gas and dust that tells the story of its violent end. Thanks to Hubble’s breathtaking 4K images, ...