The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

NASA has released three new pieces of cosmic sound that are associated with the densest and darkest members of our universe: ...

Astronomers have long sought to understand where half of the ordinary matter in the Universe is hiding. Half of the 15% of ...

Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those missing pieces were going to be." ...

Scientists have found evidence for a cosmic collision in the Perseus cluster, a group of thousands of galaxies not far from ...

Mysterious dark matter makes up 85 percent of matter in the universe, and of the remaining 15 percent, scientists couldn’t ...

If you ever want to get a bit of perspective, there's very little that's more humbling than a good deep field image – and ...

If dark energy is weakening, as suggested by recent results, then the cosmos is far stranger than most physicists had ...

Over billions of years, the universe has transformed from a simpler state into an intricate cosmic web, but new research ...

The cosmic microwave background (CMB) is the oldest light in the Universe, emitted approximately 380,000 years ... These fluctuations are the seeds of future cosmic structures, such as galaxies and ...

Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating.