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!

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 ...

Discover interesting facts about the sun, the solar system's central star that supports all life on Earth.

Seven interesting facts about Solar System New Delhi: Solar System was formed around 4.6 billion years ago from the gravitational collapse of a giant molecular cloud.

Explore cool facts about our solar system- from planets and moons to icy edges far away. Photo Credit: NASA It’s called the “solar system” because “solar” means related to the Sun.

Mars is one of the eight planets in our solar system. It has many similarities to Earth, but its distinct differences make it unsustainable for life. ... 10 fun facts about Mars, ...

Monroeville Public Library is holding a three-part children’s series on space, where participants learn fun facts about the sun, planets, stars and asteroid belt. The first session this month ...

Discover interesting facts about the sun, the solar system's central star that supports all life on Earth. ... This will be bad news for the inner planets of the solar system — including Earth.