Cosmic particles with phenomenal energy have puzzled scientists for decades. A new theory may finally unveil their origin.

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

Naomi Watts gushed over her model daughter, Kai Schreiber, 16—who she shares with ex-husband Liev Schreiber—as she unveiled ...

Astronomers have found more ORCs in the years since those initial discoveries, and some of them also appear to have a galaxy ...

Highly magnetic neutron star is wandering our Milky Way galaxy. Astronomers using NASA’s Hubble Space Telescope have tracked ...

"Magnetar birth rates and formation scenarios are among the most pressing questions in high-energy astrophysics." ...

NASA’s Hubble Space Telescope has spotted a magnetar a supermagnetic neutron star speeding across our galaxy. Its name? SGR ...

Gamma-ray bursts (GRBs) are the most energetic events ever observed in the universe. These powerful outbursts can shine a ...

NASA’s Fermi Gamma-ray Space Telescope "detected none of the high-energy gamma-ray light" from a nearby supernova. NASA ...

Its proximity to the supernova remnant HB9 once suggested a supernova birth. However, with only 80 arcminutes separating them ...

"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those ...

If dark matter is creating positrons in the CMZ, those particles will eventually slow down and eventually annihilate with electrons in the environment, producing gamma-rays at exactly 511keV energy.