An international team has discovered a gigantic filament of hot gas connecting two pairs of galaxy clusters over a distance ...

Astronomers have long been puzzled by a missing piece of the universe. While we are familiar with the ordinary matter that ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

The Big Bang made matter and antimatter in equal measure, so where did all the antimatter go? This cosmic imbalance may hold ...

Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But ...

Current models of physics dictate there should be as much antimatter in the universe as matter, but there isn't. Work at the ...

The new measurement from LHCb has found differences between baryons and antibaryons, which are made of three quarks and three ...

In a first, CERN physicists succeeded in observing matter-antimatter imbalance in baryons, fundamental particles that make up ...

CNN quotes William H. Kinney in an article about how astronomers are using mysterious fast radio bursts, or millisecond-long bright flashes of radio waves from space, to help them track down some of ...

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

Researchers may have found our galaxy's missing companions, further bolstering science's most widely accepted cosmological ...

"One day soon we may be able to see these 'missing' galaxies, which would be hugely exciting and could tell us more about how ...