They're called ghost particles for a reason. They're everywhere—trillions of them constantly stream through everything: our ...

Our galaxy's supermassive black hole is famous for being one of the dimmest in the universe. Evidence from a new space ...

It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

For the first time, astronomers have confirmed the existence of a rogue planet, one that doesn't orbit a star, by measuring ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

A globular cluster near the heart of the Milky Way is gradually dissolving, according to a new study published on arXiv, ...

A lonely world the size of Saturn is drifting through the Milky Way with no star to warm it, and for the first time ...

Somewhere between the stars, far from any sun, a planet is moving quietly through space. There is no orbit to trace and no ...

Astronomers have confirmed the existence of a “rogue planet”, a world about the size of Saturn, that is wandering through ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

A potential new type of celestial object has all the makings of a normal small galaxy. It’s rich with the same hydrogen gas ...

The most striking claim about 3I/ATLAS is its estimated age range of 8-14 billion years. This analysis, led by Michele ...