The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in ...

Created using data from two extensive surveys, this spectacular radio image of the galactic plane of the Milky Way provides valuable insights into the birth and death of stars.

In a controversial new paper, researchers argue that the acceleration of the universe's expansion has slowed down.

Astronomers may have misread cosmic acceleration for 27 years. The universe may be slowing down, not speeding up.

Astronomers analysing supernova and DESI data suggest dark energy—the mysterious force accelerating cosmic expansion—may be ...

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

Scientists now believe highly magnetised neutron stars, or magnetars, are a significant source of gold and other heavy ...

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

Three young stars have been kicked out of their cosmic nursery, perhaps for engaging in a gravitational brawl, according to Hubble Space Telescope scientists, who released images of the trio on ...

A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously ...

Buildings at Goddard’s Maryland campus are being emptied and padlocked, sources say. NASA leadership has pushed back against ...