A supernova’s changing rhythm offers evidence of a hidden magnetar, while companion observations reveal surrounding-gas ...

A sprinkling of radioactive plutonium atoms hidden in the ocean floor may trace back to a cosmic cataclysm more than 100 million years ago. What's more, that stardust appears to still be raining down ...

Add Yahoo as a preferred source to see more of our stories on Google. An outflow of matter from the helium nova V445 Puppis. Using NASA's long-serving Hubble Space Telescope, astronomers have ...

A weird cosmic explosion that stunned scientists in 2018 just got even stranger. A new analysis of the polarized light from the first recorded fast blue optical transient (FBOT) explosion — officially ...

Debris is still raining down on Earth more than 100 million years after the giant cosmic explosion that created it. A study published this week in Nature Astronomy by an international team reached ...

When a star dies, it generates an explosion of elemental nuclei and hurls them into space. Those elements, called cosmic rays, travel at nearly the speed of light, and eventually some of them ...

WASHINGTON - Astronomers have witnessed a cosmic explosion bigger and brighter than any except the Big Bang. Orbiting telescopes got the fireworks show last spring when they spotted what is known as a ...

Add Yahoo as a preferred source to see more of our stories on Google. (Craig Taylor/iStock/Getty Images Plus) A sprinkling of radioactive plutonium atoms hidden in the ocean floor may trace back to a ...