Explore space with these fun solar system worksheets. Kids will learn about planets, moon phases, and space exploration through hands-on activities. Perfect for home or classroom use, these ...

There are so many interesting solar system facts, here are some of our favorites. For about a quarter of each Uranus year (or 21 Earth years, as each Uranus year is 84 years long), the sun shines ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What ...

Earth Day is April 22 — think you know the planets? Test your knowledge of the solar system in this fun and engaging lifestyle quiz — and see how well you do!

The solar system formed about 4.6 billion years ago from a giant rotating cloud of gas and dust known as the solar nebula. Gravity caused the nebula to collapse in on itself, forming a dense, hot ...

Moons and other matter. More than 150 moons orbit worlds in our solar system. Known as natural satellites, they orbit planets, dwarf planets, asteroids, and other debris.

Some lucky kids will get the chance to see the day turn to night on April 8, when a total solar eclipse will be seen from several parts of the U.S. From building your own safety glasses to taking ...

The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of our solar system. But while it has been accepted as a theory for over 70 years, ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. With so many interesting solar system facts, we've narrowed them down to 25 of our ...

The sun is unique in that it's the only star in our solar system. Up to 85% of stars have at least one companion star. The sun contains over 99% of the mass of our entire solar system.