Meet the surprising, oddball worlds moving around our solar system. From meteorites that impact Earth, to a moon that orbits backwards, to an imposter lurking in the asteroid belt, a variety of ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A rare but faint interstellar visitor from beyond our solar system is racing toward the sun — and ...

We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life. There are lots of reasons to search for planets around other stars—exoplanets. A big one is to find other ...