From Mercury's cratered surface to Neptune's deep blue atmosphere, NASA's stunning images reveal the striking beauty and diversity of all eight planets.

The solar system is a collection of celestial bodies held together by the sun's gravitational pull. Our solar system is located in the Milky Way galaxy. The solar system consists of eight planets, ...

But what exactly is a planet? It seems like an easy question. After all, you’re standing on one right now! But the scientific ...

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 ...

Diagrams of the solar system tend to give the planets equal billing, lining them up like beads on a string with the Sun as one more object at the end of the row. The reality is wildly lopsided. The ...

As astronomers continue discovering unusual worlds beyond our solar system, many say the question that divided scientists in ...