A new study in Monthly Notices of the Royal Astronomical Society by researchers including István Szapudi of the University of ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

If this scenario plays out, “the world as we know it would collapse like a house of cards,” says one theoretical physicist.

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s matter. The rest is mysterious dark matter. But even that modest slice didn ...

Universal's Epic Universe will open on May 22, bringing timeless monsters to the present day in its Dark Universe. Here's ...

The potential finds could be contributing to some of the faintest light we can see in the universe, say researchers.