Earth Matters

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.

Good news has been scarce. But here's at least one update ― from one million miles away ― to appreciate.

New data from the European Space Agency now show drops in nitrogen dioxide concentrations over Italy due to that country's nationwide lockdown.

As people have changed their everyday behaviors to contain or avoid the coronavirus, there have been subtle effects on the environment.

Since its launch on the web in April 1999, NASA Earth Observatory has published more than 15,500 image-driven stories about our planet. In celebration of our 20th anniversary -- as well as the 50th anniversary of Earth Day -- we want you to help us choose our all-time best image.