EARTH

Imagine Earth colliding with a planet similar to Mercury. That's how scientists think carbon may have found its way to Earth.

A new study argues that all carbon in Earth’s mantle may have been brought here by a collision with a Mercury-like protoplanet 4.4 billion years ago.

The fossils, which date back 3.7 billion years and predate the world’s previous oldest stromatolite fossils, could point to rapid emergence of life on a young Earth.

Planet nine could really ruin what we thought were the plans for some of our outer planets.

The average temperature for every month in 2016, except March, was higher than in any year since reliable record-keeping began, according to NASA.

A study, based on computer simulations of dynamos created by turbulent liquids, argues that between 500 million and 1 billion years ago, Earth may have had a multipolar magnetic field.

Scientists may be able to use Mars as a parallel to learn more about Earth and the possibility of sending people to the red planet.

There are plenty of reasons to appreciate trees and ways to celebrate Arbor Day this Friday.

To celebrate Earth Day, take a look at these stunning photos of our planet from space by NASA and learn how you can do your part to protect it.

Earth Day is a time to reflect on the beauty of Mother Nature and learn ways (and teach others) to keep her healthy.

Did you know Earth Day started in 1970 because of a United States senator?

In honor of Earth Day, here are some fun and educational ways you can spend the day honoring Mother Nature.

A new star has a rare composition made almost entirely of oxygen.

Here are 15 easy ways you can help save Earth’s plants and animals on World Wildlife Day or any day.

It's still unknown what WT1190F is, but it's likely a piece of man-made space junk.

GJ 1132b, which lies outside the solar system, is rocky and roasting at 500 degrees Fahrenheit.

"The evidence says no one's out there," said world-renowned NASA scientist William Borucki.

Scientists are now saying Earth's first mass extinction was caused by evolution itself, not one, catastrophic event.

Leaders of the Khoisan community voiced their grievances, including discrimination for not being "black enough."

It wasn't moving fast enough to be a meteor, NASA said.

NASA's New Horizons, scheduled to make a flyby of the dwarf planet on July 14, has captured the "complex orbital dance" of Pluto and its moon Charon.