Usually, sunlight makes cometary gases glow green from diatomic carbon (C2) or blue from ionized carbon monoxide (CO+). With ...

Perihelion is the point on an orbital course that brings a body closest to the sun. C/2025 K1 (ATLAS) is an Oort cloud comet ...

An astronomer has snapped comet 3I/ATLAS using the Lowell Observatory's powerful Discovery Telescope, as well as his own ...

A photographer who captured a comet in the night sky above the Yorkshire Dales said he spent weeks waiting for the perfect ...

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening ...

"The implication of alien technology would be huge and therefore we must take it seriously,” Harvard's Avi Loeb told Newsweek ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

Comet 3I/ATLAS, which made a close approach to the sun, has prompted lots of public interest. Kim Kardashian asked NASA's ...

Water discoveries in space happen all the time. But this one’s actually a big deal, and not just because some scientists got ...

Contrary to claims that 3I/ATLAS is no longer from Earth, space experts claim that the Manhattan-sized comet can now be ...