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

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

The interstellar comet 3I/ATLAS has a thick irradiated crust that no longer resembles its home star system, simulations and ...

Contrary to claims that 3I/ATLAS is no longer from Earth, space experts claim that the Manhattan-sized comet can now be captured by anyone with basic viewing equipment. Astronomer Yicheng Zhang ...

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

The 3I/ATLAS comet was first spotted in July near Jupiter after it entered our solar system from another universe. Here’s ...

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

U.S. officials continue monitoring interstellar comet 3I/ATLAS despite the government shutdown, with NASA coordinating ...

Comet 3I/ATLAS was first detected on July 1, 2025 by the Asteroid Terrestrial-Impact Last Alert System (ATLAS). As it approached the Sun, it displayed a subtle non-gravitational acceleration, ...

There is no evidence to support the idea that this interstellar object is anything but a comet, but let's double-check.

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

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