Astronomers have discovered the first microblazar in the Milky Way, a black hole-powered particle accelerator that is blasting near-light-speed plasma jets at Earth.

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Launch of space shuttle Atlantis is postponed after golf ball-sized hail from a severe storm damaged the foam insulation on the external fuel tank. NASA announces the delay and plans to return the ...

A new theoretical study suggests that the supermassive black hole at the center of the Milky Way could accelerate particles ...

Rogue black holes that break away from their cosmic homes may carry with them the histories of the galaxies they may eventually escape. Astronomers have discovered the first microblazar in the Milky ...

Add Yahoo as a preferred source to see more of our stories on Google. What if an entire galactic nucleus was blasting high energy radiation directly at Earth? (Credit: NASA) A new paper in the Journal ...

Making it work would require pulling a lot of (cosmic) strings—but perhaps we need wild explanations to explain wild events.

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Milestone results released by the Large High Altitude Air Shower Observatory (LHAASO) on November 16 have solved a decades-old mystery about the cosmic ray energy spectrum—which shows a sharp decrease ...