A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By ...

In a controversial new paper, researchers argue that the acceleration of the universe's expansion has slowed down.

This quiz dives into the mysterious world of dark matter — what we know, what we don't, and how scientists are chasing shadows across the cosmos. From galaxy rotation curves that defy Newton's laws to ...

Scientists have discovered that dark matter, the universe's most mysterious "stuff," obeys gravity on vast cosmological scales. This could help to dismiss the possibility of a fifth fundamental force ...

For years, scientists have focused on a leading theory that dark matter is made up of invisible particles known as WIMPs ...

It's almost become expected that many space telescopes and probes can have "extended missions." Both Voyagers are still ...

A mysterious gamma-ray glow from the Milky Way's core has scientists divided. While pulsars were the leading theory, new ...

As the hunt for dark matter, the universe's most common yet most mysterious "stuff," continues, scientists are understandably eager to get the most powerful space telescope in on the action. Space.com ...

In the blink of an eye after the Big Bang, the universe could have birthed strange new stars and black holes.

The Hubble Space Telescope has been used to study NGC 1052-DF2 — a galaxy that is lacking dark matter. Credit: NASA's Goddard ...

Physicists chilled a sugar crystals then used them to search for dark matter. This new project is called SWEET.