Earth Matters

By studying Lake Salda, researchers gained a better understanding of the potential microbial and geological processes at Jezero Crater.

Every month we offer a puzzling satellite image. Your challenge is to tell us what we are looking at, where it is, and why it is interesting.

Every year, a group of scientists affiliated with the Global Carbon Project give Earth something like an annual checkup.

More than 1,000 astronaut photos have been published on EO. Help us choose the best in our archives.

Fifty years ago, the Apollo astronauts carried some souvenirs from Earth to the Moon, and then brought them back.