Earth Day began as a protest in 1970, but its meaning has evolved. Here’s how it changed - and what it represents today.

Scientists have seemingly settled long-standing arguments about whether the components of Earth originated from the inner or ...

The recent Artemis II mission gave four astronauts a one-of-a-kind perspective on Earth, and their photos show just how small ...

This occurrence will be the closest approach to Earth by an asteroid of this size that scientists have known about in advance ...

Millions of people around the world will pause, at least for a moment, to mark Earth Day. The annual event is Wednesday.

For the first time, scientists have watched a subduction zone literally fall apart beneath the ocean floor. Using advanced ...

See stunning photos of Earth taken from space by astronauts and robotic spacecraft, celebrating our home planet on Earth Day.

April 22 is Earth Day. Have some fun and use NASA's Landsat to see your name in satellite images. Use interactive map for ...

Deep within Earth’s core, scientists are uncovering signs of a hidden structure that challenges long-standing models of the planet’s interior.