Bad news for those hoping interstellar invader 3I/ATLAS is an alien spacecraft as technosignature search turns up empty.

The observations were carried out by the Breakthrough Listen program as the object neared its closest approach to Earth on ...

It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

Did an alien spacecraft just fly by Earth? That’s the question a lot of people, including Harvard astrophysicist Avi Loeb, are asking right now. A massive interstellar object called 3I/ATLAS which ...

"Ultimately, this work may help scientists better predict the impact of space weather across the solar system on longer timescales than currently possible." When you purchase through links on our site ...

Parker Solar Probe reached "perihelion," the nearest point to the sun in its orbit, on Dec. 13, 2025. Credit: ASA / Johns Hopkins APL / Steve Gribben illustration A NASA spacecraft is making a close ...

I don’t think anyone declared it, but 2025 was a big year for comets. There was comet Lemmon, which was discovered in January and stayed in the news for a good nine months. The images of Lemmon’s long ...

NASA's highly anticipated comet 3I/ATLAS images have been released, with a space agency official shooting down alien rumors and stressing that the interstellar visitor is a comet. When you purchase ...

WASHINGTON, Nov 19 (Reuters) - NASA released fresh images on Wednesday of the interstellar object called 3I/ATLAS that astronomers have determined is a comet probably even older than our solar system, ...