The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

The comet, named 3I/ATLAS, is only the third confirmed interstellar object ever seen in our solar system. That means it came ...

When people picture space, they often imagine endless black emptiness dotted with planets and stars. But new research shows that the region surrounding our solar system is far from empty. Instead, it ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

Astronomers have observed a massive growth rate in a free-floating rogue planet that’s gobbling up gas and dust at a record rate of 6.6 billion tons per second.