Astronomers have for the first time seen the birth of a magnetar—a highly magnetized, spinning neutron star—and confirmed that it's the power source behind some of the brightest exploding stars in the ...

A rare star reveals how the Universe's first stars exploded, helping explain the Milky Way’s outer halo and its unusual chemistry.

Discover the 25 Fastest Recorded Phenomena in the Universe, from light speed to black hole jets. Explore cosmic speed limits and blazing events that defy c ...

Imagine looking up at the night sky and seeing a star suddenly burst into a blaze of light brighter than anything nearby. A flash so bright that it briefly outshines an entire galaxy before fading ...

An artist's impression of a magnetar with a wobbly accretion disk. (Joseph Farah and Curtis McCully) A never-before-seen 'chirp' in the light of an exploding star has revealed new clues about the ...

For decades, scientists have tried to measure how fast the universe is expanding. This expansion rate is known as the Hubble constant, and it plays a central role in understanding the history and ...

Astronomers have uncovered an ultra-rare star that could reshape our understanding of the early universe. Named PicII‑503, this 14-billion-year-old star has survived almost since the Big Bang and ...