One galaxy uses a quasar like a cosmic weapon, blasting its opponent and halting star formation—an epic deep-space duel seen for the first time.

In a rare cosmic spectacle, astronomers have observed two galaxies engaged in a high-speed collision, approximately 11 ...

What happens right before two bolts of lightning smash into each other? An invisible blast of radiation a million times more ...

The Boston Celtics were temporarily down another starter Wednesday night. The incident happened with 1:04 remaining in the third quarter as the Celtics led 77-66. Bitadze was attempting to rebound ...