Observations of interstellar object 3I/ATLAS show increased water, carbon dioxide, and organic gas release after its passage near the Sun, based on data from NASA’s SPHEREx mission ...

In 2017, an interstellar object zipped through our solar system and instantly triggered the most predictable headline: aliens. But the real mystery wasn’t the shape—it was the motion. It accelerated ...

A 2024 report by the Pentagon found no evidence of an alien cover-up, though it said that the belief that the government is ...

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

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

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

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

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

A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which Harvard scientist Avi Loeb claims raises the ...

This twist — that 3I/ATLAS' outer layers have been baked by the sun — does not derail our mission. It just makes the science ...

In 1883, a comet capable of ending life on Earth narrowly missed impact. Only one man on the planet noticed, a Mexican scientist.

Astronomers are tracking a visitor called 3I/ATLAS, the third confirmed interstellar object ever observed. The two previous instances were 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. 3I/ATLAS is ...