Korean scientists studying Type Ia supernovae have found strong evidence that the universe's expansion is not accelerating, ...

A 'prelude to a supernova' is how NASA describes this stunning new James Webb Space Telescope image of Wolf-Rayet Star WR 124. Travel 15,000 light years in this zoom-in to see the amazing look. Credit ...

As if dark energy weren't already mysterious and baffling enough, new research suggests that this unknown force may not be ...

The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in the Cassiopeia constellation. Credit: Space.com | footage courtesy: NASA, ...

NASA's Chandra X-ray Observatory and Hubble Space Telescope confirmed the existence of a companion star orbiting Betelgeuse, the massive red supergiant in Orion. The finding provides insights into the ...

A study using the NASA’s Chandra X-ray Observatory and other X-ray telescopes has revealed that "an exploded star can pose more risks to nearby planets than previously thought." The Chandra team ...

For several decades, evidence has suggested that the expansion of the universe is accelerating. Crucial to those estimates ...

While pottering around the universe, the Hubble Space Telescope recently clicked a photo of a dying star. The image sent back to Earth looks like a giant lidless eye peering back at the telescope, as ...

NASA's NICER telescope halts its mission after a key motor fails; engineers attempt to salvage eight years of space science.