This gravity disparity is largely due to that equatorial bulge creating non-uniform distances from points on the planet's surface to center of the Earth, and to the fact that the Earth spins.

Sound as we know it does not exist in space. That’s because, on Earth, sound mainly travels to our ears via vibrating air molecules. Because space is a vacuum, meaning there is no matter at all ...

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 ...

Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin, with liquid water on its surface—and maybe even life. Now, the world is a cold ...

Patrick holds a master's degree in international journalism from Cardiff University in the U.K. More about planet earth Greenland's ice sheet — the second biggest in the world — is cracking ...

This list of family Earth Day activities will inspire your family to come together and do something positive for our Planet Earth ... seed bombs with your kids is a fun and hands-on way to ...

Venus spins clockwise on its axis, opposite to most other planets, causing the sun to rise in the west. Venus is often called Earth's "sister planet" because it is similar in size and composition.