On July 1, 2025, astronomers at the Asteroid Terrestrial-impact Last Alert System (ATLAS) in Hawaii detected a large object ...

Comet 3I/ATLAS is one of only three interstellar objects ever detected in our solar system. Scientists are working to determine the comet's size and physical characteristics as it passes through our ...

Comet 3I/ATLAS isn’t hiding from view; it has been coming from behind the Sun, making it hard for ground-based telescopes to track. That’s why we haven’t seen much of it yet. So no, this doesn’t mean ...

Interstellar object 3I/ATLAS continues to fascinate astronomers as it rips through our solar system. And the more we find out about the object — widely suspected to be an icy comet — the more ...

Harvard astrophysicist Avi Loeb says interstellar object 3I/ATLAS will face its 'acid test' this Halloween as it nears the Sun, a moment that could reveal if it's a natural comet or something ...

A new report offers the latest confirmation of 3I/ATLAS and its interstellar origins, as scientists still debate over its unusual properties.

Scientists now believe such travelers arrive more often than once thought, and some may even strike our planet. A new study ...

Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is hiding it from Earth ...

I/ATLAS made its closest approach to Earth on 29 October 2025, coming within 1.8 astronomical units, or around 167 million miles.