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

Astronomers have spent more than a decade watching a compact stellar remnant called P13 slip into near silence and then surge ...

The cosmos has delivered a rare kind of fireworks display, and astronomers are racing to understand what it means. A strange double flash from a distant galaxy appears to show two neutron stars ...

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

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 spoonful of this star's matter can weigh a billion tons. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. By developing a new theoretical ...