When worlds collide…suns act squirrely. Astronomers have witnessed a rare and violent cosmic crash between two planets, and ...

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with nothing but our eyes. Yet, that 238,855-mile gap between Earth and its lunar ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

Mercury, Venus, Earth and Mars – may have formed from two rings around the young sun, rather than a single disc ...

Every day on Earth, you experience weather. You feel the wind blowing and see clouds move across the sky. Sometimes there are storms where the wind gets really strong, it might rain, or there might be ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial rocks reveals. When you purchase through links on our site, we may earn an ...

About 4.5 billion years ago, the most momentous event in the history of our planet occurred: a huge celestial body called Theia collided with the young Earth. How the collision unfolded and what ...

Add Yahoo as a preferred source to see more of our stories on Google. A supermoon — also called a sturgeon moon — rises as a jetliner approaches John F. Kennedy International airport, Thursday Aug. 11 ...