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

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

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

NASA’s James Webb Space Telescope has recently made a historic observation, identifying the earliest supernova ever detected.

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

A flaring black hole whips up ultra-fast winds of more than 37,000 miles per SECOND, reveals new research. X-ray space ...

The universe is expanding, but astronomers still cannot agree on exactly how fast. That mismatch, known as the Hubble tension ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

These gigantic structures, which contain hundreds or even thousands of galaxies bound together by gravity, offer important ...

Clues about how galaxies like our Milky Way form and evolve and why their stars show surprising chemical patterns have been ...