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

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

Mars will be visible to stargazers Sunday night as it moves into opposition with Earth. All you have to do is walk outside and look up at the sky. Because Mars is directly opposite the sun, the red ...

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

The interstellar object 3I/ATLAS has been something of a mystery ever since it graced our solar system. From all outward ...

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 ...

A stunning new video, made from Mars Express orbiter data, allows you to soar over a gigantic maze on the Red Planet in ...

NASA’s Perseverance rover found possible signs of ancient life in rocks on Mars, keeping scientists up at night.