More than 150 moons orbit worlds in our solar system. Known as natural satellites, they orbit planets, dwarf planets, asteroids, and other debris. Among the planets, moons are more common in the ...

The Sun and Planets of our Solar System Including Pluto. (Photo by: Education Images/Universal Images Group via Getty Images) (NewsNation) — The search for the hypothetical “Planet Nine” has shifted ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter ...

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new dwarf planet. It's called 2017 OF 201, a rock that appears to be some 700 ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...

If this planet is still out there, it could be wandering somewhere far beyond our reach. So, was our solar system supposed to have one more planet? Looks like the universe had other plans!

Indeed, other planets, dwarf planets and moons in our solar system do have seasonal cycles — and they can look wildly different from the ones we experience on Earth, experts told Live Science.

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar ...

To discover where they stand in the Friend Solar System users can simply tap on either the “Best Friends” or “Friends” badge. This unique representation of friendship using planets brings a ...

In 2006 they voted on a new definition for a planet. Imagine entering our solar system from interstellar space. As you travel toward our Sun, you would move through three distinct regions. First you ...