The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it consumed little matter and was in a dormant state. But recently it suddenly lit ...

Scientists have observed a previously inactive supermassive black hole producing regular, powerful X-ray eruptions that ...

In a star’s core, fusion takes terrific temperature and pressure that is provided by the crushing gravity of the star’s overlying mass. For a star to be relatively stable, the outward force of the ...

A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at ...

The star ZTF SLRN-2020 was believed by astronomers to have swollen up and engulfed a planet. Recent studies, however, suggest ...

This is a still from an animation showing asteroid 2024 YR4 as it passes by Earth and heads toward its potential impact with the Moon. This 3D shape of the asteroid was determined from data obtained ...

The billionaires behind Facebook and Google can do more than hand out glitzy awards for science. They should fund the ...

Although we know that supermassive black holes (millions of times the mass of our sun) lurk at the center of most galaxies, ...

Two years ago, a star on its deathbed was charged with a heinous act — eating a planet — in a system 12,000 light-years away ...

Asteroid 2023 KU, comparable to a 35-story building, will safely pass Earth on April 11, 2025, at a distance twice that of ...

Astronomer Charles Steinhardt said most stars we see "might have formed under different conditions than we previously believed." ...