Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

Using the world's most advanced radio telescopes, astronomers have discovered a spinning dead star so rare, strange and ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

Our universe just got a lot weirder. From planets with rings larger than the Sun to alien worlds where it rains molten iron or glows magenta, NASA’s latest exoplanet discoveries are challenging ...

Astronomers have identified a mysterious new object hurtling through our solar system, believed to have originated from interstellar space. First spotted on July 2, 2025, by the ATLAS survey ...

PARIS, France - Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ever spotted, though scientists suspect many more may slip ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

Solar energy harvesting and hydrogen economy are the two most important green energy endeavors for the future. However, a critical hurdle to the latter is how to safely and densely store and transfer ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar object to pass through our solar system.

More NASA scientists have confirmed that a mysterious object shooting toward us through the solar system is an "interstellar object" — only the third of its kind ever seen.

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.