The "afterglow" of the universe is an important piece of evidence for the Big Bang. This background radiation also provides ...

Researchers suggest the universe's background radiation has been overestimated, potentially challenging the standard model of ...

Scientists are using cosmic distortions in light to test a bold idea: that the Universe might not be as symmetrical as we’ve ...

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

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

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy. These "free-floating" worlds don't orbit stars, but instead roam the ...

"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." ...

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

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

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 ...

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

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