We've also littered the heavens. We know it might be a problem someday. There's everything we've left behind on the Moon and on Mars, the probes …

Since the days when many of us were making crudely-painted Styrofoam models of our Solar System for middle-school science class, what we know about our galactic neighborhood has changed, and more than...

Though our solar system is billions of years old, there's tons of stuff we still don't know about it. Every year, we discover newer and cooler space features we didn't even know existed, like the following...

Even without the mythological aspect, Jupiter is a prominent, easy-to-study element of modern astronomy, with a host of features that boggle the mind. …

Our solar system is pretty sweet. It supports life on Earth and is relatively safe — at least, it is for now. These little tweaks would utterly doom life on Earth.