Photographs of planets can fool you. A close crop of swirling cloud bands or a patch of rusty dust can look like almost anything, and many of us only recognize a planet when we see the whole disk ...

But what exactly is a planet? It seems like an easy question. After all, you’re standing on one right now! But the scientific definition was fairly loose until recently. The discovery of other ...

Outer space is, for lack of better words, infinite. For thousands of years, humans have tried to comprehend the vastness of space, and yet so much remains unexplored and undiscovered. While space ...