In honor of Earth Day, here are some actually cool facts about our planet. Share your favorite most mind blowing facts in the ...

Earth serves as our fragile and precious home. As far as scientists are aware, it's the only astronomical object known to ...

The planet is almost 25,000 miles around and 4.54 billion years old, and humans are still discovering some of the amazing ...

16. Despite Mercury's extreme temperatures (like, up to 800 degrees Fahrenheit), it's believed to have ice at its north and ...