Add Yahoo as a preferred source to see more of our stories on Google. This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course ...

Billions of years in the future, our Sun will become a red giant and then die out. But when the Sun dies, where do we go? Well, Elon Musk's Mars mission is starting to look appealing. Could Mars be ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

In a solar system far, far away NASA have discovered a planet which they think 'might be remarkably similar to Earth', though ...