December 2024 will see a rare "black moon," a term for the second new moon in a calendar month. The second new moon of ...

The known black holes that populate the universe fall into two types: those up to a few dozen times the mass of the sun and ...

The Capital Region got quite a show in 2024, thanks to a melange of natural forces and phenomena. It was a year that lit up ...

The 2025 skywatching guide includes a rare sunrise solar eclipse, an occultation of Mars and three supermoons. Here are the ...

Caltech’s Katie Bouman explains how the Event Horizon Telescope Collaboration captured the first imager of the Sagittarius A* ...

The first-ever photographed black hole emits an extraordinary gamma-ray flare, billions of times more energetic than visible ...

From a telescope network that spans much of the globe to a psychology study that spans 67 countries, here are the biggest ...

A massive, energetic jet from Virgo A could help scientists understand how matter behaves around a black hole.

Recent findings on gravastars enhance our understanding of cosmic phenomena, offering a stable alternative to black holes in ...

In the center of NGC 5084, some 80 million light-years away, the supermassive black hole around which the whole galaxy ...

Scientists have observed a rare and powerful gamma-ray flare from the supermassive black hole at the center of the galaxy ...