In the spirit of the season, the interstellar comet 3I/ATLAS is changing color as it leaves the sun behind — shifting from a ...

If a major disaster like Fukushima or Chornobyl ever happens again, the world would know almost straight away, thanks to an array of government and DIY radiation-monitoring programs running globally.

By studying faint distortions in galaxy shapes across a vast region of sky, scientists probed the hidden structure of the universe. In the standard picture of the universe, nearly everything is hidden ...

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

The universe’s expansion rate was supposed to be a solved problem, yet the latest high precision map of the early cosmos has ...

The Atacama Cosmology Telescope in Chile not only confirmed one of the greatest mysteries in the universe—it also ruled out ...

A new study, published on Arxiv, has deepened the cosmic puzzle surrounding the “Hubble tension,” an ongoing debate about the ...

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

Black mold discovered inside at the site of the infamous reactor meltdown in 1986 appears to use ionizing radiation as an energy source. James Spicer pose in front of the door to the simulated Martian ...

Douglas Scott is professor of physics and astronomy at the University of British Columbia in Vancouver, Canada. He collaborated with George Smoot at Berkeley. Joseph Silk is professor of physics at ...

Using CERN’s Super Proton Synchrotron, researchers generated plasma fireballs to simulate blazar jets. The beams stayed stable, suggesting plasma instabilities aren’t responsible for missing gamma ...

The popular consensus among scientists is that the universe will continue expanding until the bitter end. A team of researchers is now pumping the brakes on that idea. A new theory promises to ...