A distant neutron star unexpectedly reawakened, unleashing a powerful X-ray surge that may reveal how the universe’s most ...

Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. But what if we took ...

A distant neutron star has abruptly erupted in brightness, surging to roughly one hundred times its usual output and leaving astronomers scrambling to explain what could drive such a violent change.

A double blast of dying stars may be the first observed case of a long-hypothesized, never proven “superkilonova.” Although ...

Astronomers tracked a decade of dramatic changes in P13, a neutron star undergoing supercritical accretion. Its X-ray ...

Astronomers may have discovered the first example of an explosive cosmic event called a "superkilonova," in the form of a gravitational wave signal detected on Aug. 18, 2025.

A research team has investigated long-term X-ray variability in the neutron star NGC 7793 P13, an object thought to be driven ...

Columbia Professor Brian Metzger helped other astronomers interpret their observations of the unexpected stellar event.

Describing matter under extreme conditions, such as those found inside neutron stars, remains an unsolved problem. The ...

Neutron star NGC 7793 P13’s decade-long monitoring shows huge X-ray and spin changes, providing clues to supercritical ...

It weighs more than 2 times the mass of our sun, but is only 18 miles wide. Astronomers have discovered the "most massive neutron star ever measured," amassing to more than two times the mass of our ...