The comet was discovered on July 1 by the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope. Knowing where to look, Rubin’s team found observations of the comet from June 21. For ...

Interstellar Comet 3I/ATLAS was the third visitor from outside our system, and its origins were being studied using an interstellar visitor model.

A rare interstellar comet is flying through our solar system. Here's how—and when—you might be able to see Comet ATLAS from ...

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first spotted on July 1 by the NASA-funded Asteroid Terrestrial-impact Last ...

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first spotted on July 1 by the NASA-funded Asteroid Terrestrial-impact Last ...

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. Credit: NASA/JPL-Caltech via AP ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth – but closer to the red planet than us at a safe 150 million miles away.

The comet won't swing close to Earth like Tsuchinshan-Atlas did last year. Other notable flybys included Neowise in 2020 and Hale-Bopp and Hyakutake in the 1990s.

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked-eye spectacle.

A newly discovered comet, called C/2025 F2 (SWAN), may have disintegrated. But the remnants are still visible.