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

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

The live event will take audiences on an extraordinary journey through a century of exploration and discovery in the natural ...

New research suggests that many planets previously considered promising for life may, in fact, be far less hospitable. A ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

A nearby Earth-sized planet offers a rare chance to study how atmospheres survive or disappear on rocky worlds.

This men’s fashion brand proudly announces its official membership with 1% for the Planet, donating 1% of all sales from its ...

Scientists identify 45 potentially habitable exoplanets, using exact data and quotes to guide future telescopes in the search ...

This Sunday, the Sequoia Park Zoo celebrated its annual Earth Day celebration — Party for the Planet. The event, part of the ...

Sloths are the slowest mammals of all, but asteroid 2026 HX3 is anything but that – both in terms of being slow and in terms ...

Earth is not a quiet rock in space. Deep inside, there is a molten interior that stays extremely hot, shifting slowly and ...

Earth Month is a great time of year to remind students about the importance of caring for our planet, and here are five ways ...