Evolution is the way groups of life-forms change over time to better fit the places they live.It is why life takes "such ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

Earth's circumference is 24,901 miles (40,075 km), making it the largest rocky planet in the solar system. Our planet orbits 93 million miles (150,000 km) away from the sun.

It’s probably best if we don’t think too much about Earth. After all, it’s a tiny orb spinning more than 1000 mph at the equator while simultaneously zipping through space at 67,000 mph. It ...

Learn about the Earth with these 5 incredible facts about our planet, including the temperature of the Earth's core and Pangea.

In honor of Earth Day, here are 25 facts about the history of our celebration of Mother Earth, as well as facts about the environment that may serve as a wake-up call for action.

Just as Earth’s land surface has enormous peaks and valleys, the oceanic world has similarly varied topography. Perhaps the most intriguing of these features is the Mariana Trench — a chasm in ...