In July 2025, astronomers detected the third known interstellar object ever observed passing through our solar system—an ancient, carbon-dioxide–rich comet traveling at extraordinary speed. Named 3I ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Comet Wierzchoś, also known as C/2024 E1, is rapidly brightening as it approaches its closest point to Earth next week. But ...

On February 17, the comet will make its closest approach to Earth from 94 million miles, roughly as far as the Sun.

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets ...

Comets usually fade quietly once they swing past the Sun. Interstellar comet 3I/ATLAS did not follow the same path. Instead, ...

In 2017, an interstellar object zipped through our solar system and instantly triggered the most predictable headline: aliens ...

The interstellar visitor, only the third such object to be discovered passing through our solar system, ignited controversial ...

NASA's shock discovery as interstellar comet 3I/ATLAS blasts out pristine ices at 153,000mph, reigniting alien theories and cosmic questions.

Discover the latest findings on interstellar comet 3I/ATLAS, from rare methane detections to high-resolution Hubble images, as it begins its final exit from our solar system.

President Donald Trump has issued a statement that he will instruct the federal government to begin releasing all of its ...

SIGNS of an alien planet that’s about the same size as Earth have been picked by up a Nasa telescope. Scientists say it might even be within its host star’s “habitable ...