If you are a budding astronomer or simply enjoy watching the sky through a telescope, you probably have an interest in all of the planets in our solar system. There are a total of eight planets ...

From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order of the planets isn’t just trivia—it tells a story about temperature, ...

Think you know your way around the solar system? From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order of the planets isn’t ...

What is the order of planets in our solar system? The planets in our solar system are usually ordered by their distance from the Sun, with Mercury being the closest.

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

Each of the planets in our solar system is unique in its very own way, and here are some of the best images that show that off.

Why do the solar system’s planets have different compositions? While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

This process, called accretion , is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.