Among the more puzzling cosmic phenomena discovered over the past few decades are brief and very bright flashes of blue and ...

Mysterious Bright Flashes in the Night Sky Baffle Astronomers Celestial transients shine furiously and briefly. Astronomers ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

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

Visitors to the Sunwheel can see the sun rising and setting over the winter solstice stones from approximately Dec. 16 ...

Compelling evidence that the structure of matter surrounding supermassive black holes has changed over cosmic time has been ...

The first pulsar was discovered in 1967 by Jocelyn Bell Burnell. Finding these mysterious signals forever changed astronomy.

The new candidate, AT2025ulz, initially acted like a kilonova, only to later mystify scientists by morphing into what ...

An artist’s impression depicts the accretion disk surrounding a black hole, in which the inner region of the disk wobbles. In this context, the wobble refers to the orbit of material surrounding the ...

Astronomers have recorded a unique awakening of the neutron star P13. Over the course of a decade, its X-ray brightness has ...

Smooth filaments stretching for many light-years, seen by the powerful space telescope, could indicate what the right "recipe ...