Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

A distinctive blue and green image of Earth reveals our planet's most remarkable features. At 4.54 billion years old, our home world is a venerable object. But it was only with the arrival of the ...

A collection of down-to-Earth facts about our planet and its place in the solar system. This collection introduces the Sun as the main source of light and heat on Earth. It explains that the Earth ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

Understanding how the Earth and moon formed is important for piecing together the history of the solar system and answering questions like how long planets take to form, what planets are made of, and ...

The ancient rock is slowly descending within a strange blob of Earth’s outer core that protrudes into the planet’s rocky mantle. A favorite genre of scientific discovery is the one that begins ...

As parents, we’ve all probably gotten that side-eyed reprimand from our kids when we ... But true stewards of the planet inspire people outside the family to keep the Earth clean.

The shift to "Earth" representing the planet occurred gradually, solidifying after the Copernican Revolution. Among the planets in our solar system, Earth stands out not just for its life ...