New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

By harnessing the Speed Force, DC Comics ’ Flash is the fastest being in comic book history, capable of moving at speeds that ...

A never-before-seen blast from a supermassive black hole was spotted by two sophisticated X-ray space telescopes. This giant ...

The X-ray Imaging and Spectroscopy Mission (XRISM), a Japan Aerospace Exploration Agency (JAXA) and NASA collaboration with ...

A faint, ancient flash of light detected by the James Webb Space Telescope (JWST) has broken the record for the most distant ...

Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion.

If you feel a thrill every time we discover something new about the cosmos, then November 25th may have been a noteworthy day ...

From a particle smasher encircling the moon to an “impossible” laser, five scientists reveal the experiments they would run ...

NASA’s James Webb Space Telescope has recently made a historic observation, identifying the earliest supernova ever detected. This discovery, made possible by Webb’s advanced imaging capabilities, was ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

NASA has completed assembly of the Nancy Grace Roman Space Telescope, preparing for final testing and launch by May 2027 to ...

High above Antarctica, two giant NASA balloons are being readied to drift along the edge of space, turning the polar sky into a laboratory for some of the hardest questions in physics. Instead of ...