We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.

During that time, it has created the most comprehensive map of the Martian atmosphere and its chemical composition, examined ...

ESA’s Mars orbiters captured images of the interstellar comet 3I/ATLAS as it passed close to Mars, revealing its bright, hazy ...

The tests also revealed that the ditches only develop on dunes with very fine, evenly sized sand grains. Coarser or more jagged material prevents the burrowing motion, which could explain why the ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But mitigating this is its far greater distance, plus the fact that Earth appears much ...

NASA's Perseverance Mars rover may have captured an image of interstellar comet 3I/ATLAS streaking across the sky above the ...

New study shows Mars went through shrinking ice ages, revealing how it lost water and where future missions might find what's ...

Interstellar comet 3I/ATLAS made its closest pass of Mars on Oct. 3, and Europe’s Red Planet spacecraft were ready for it.

Scientists have captured rare insights into Mars’s north polar vortex, where temperatures plunge far below those outside its boundaries and darkness triggers an unusual surge in ozone. New observation ...

Mars, once a thriving world with rivers and oceans, holds untold secrets about its past that could change how we view life ...