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

3I/ATLAS is called a comet. Except that, upon closer look, it doesn't look like a comet. Dubbed as an "unusually fast" ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

Interstellar visitor 3I/ATLAS has been constantly changing as it makes its way through our solar system. That's to be ...

The asteroid belt may seem permanent, but it is far from static. Its slow decline reveals a more violent past when more ...

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

Astronomers have discovered a significant “growth spurt” in a rogue planet outside of our solar system. The free-floating planet is currently consuming gas and dust from its surroundings at a rate of ...

Scientists have been left puzzled after spotting that the mysterious interstellar object in our Solar System is 'bleeding' ...

"It was just a matter of time before we found them." ...

I/ʻOumuamua, 2I/Borisov, and 3I/ATLAS. Each offers unique insights into shape, composition, and trajectory, revealing interstellar chemistry, comet formation, and cosmic dynamics. 3I/ATLAS, passing ...

The uncommon interstellar visitor, comet 3I/ATLAS, is captivating astronomers worldwide as it races through our solar system at an astonishing speed of roughly 130,000 mph (219,000 km/h).

Every once in a while, our solar system receives a fleeting visitor from the depths of our galaxy. On July 1, 2025, NASA’s ...