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 ...

Discover the 25 Fastest Recorded Phenomena in the Universe, from light speed to black hole jets. Explore cosmic speed limits ...

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 ...

For decades, scientists have tried to measure how fast the universe is expanding. This expansion rate is known as the Hubble ...

An artist's impression of a magnetar with a wobbly accretion disk. (Joseph Farah and Curtis McCully) A never-before-seen ...