Everything on the electromagnetic spectrum has some properties of both waves and particles, but it’s difficult to imagine a radio wave, for example, behaving like a particle. The main evidence for ...

A dark matter signal that appears in one place but not another might look like a contradiction. This new study argues it may ...

A mysterious glow of gamma rays at the center of the Milky Way has long hinted at dark matter, but the lack of similar ...

Dark matter may consist of two particles, explaining why only the Milky Way shows a strange gamma-ray signal while smaller ...

A new study suggests that failing to detect dark matter signals in some galaxies may not contradict evidence seen in our own.

With the help of special telescopes, researchers have observed a cosmic particle accelerator as never before. Observations made with the gamma ray observatory H.E.S.S. in Namibia show for the first ...

The Milky Way’s center glows with an unexplained surplus of gamma rays. Smaller galaxies orbiting nearby do not. That ...

Long gone are the days when astronomers only studied the skies with simple optical telescopes. Today, unveiling the mysteries of the Universe involves ever-larger and more complex facilities that ...

The 10,000-year-old remnant of a supernova 2,600 light years away is acting like a giant particle accelerator, and it’s flinging cosmic rays out across the galaxy — like the Large Hadron Collider on ...

Add Yahoo as a preferred source to see more of our stories on Google. Space scientists seeking to understand the enigmatic origins of powerful cosmic rays have detected an extremely rare, ...

NASA sent a retired Cold War spy plane on a storm-chasing mission, and it discovered that big thunderstorms are very radioactive. Large thunderstorms produce so much gamma radiation that the clouds ...