NASA wants you to get out there on Earth Day (that’s today), take a selfie and beam it up via #GlobalSelfie.

Then the agency will use the snapshots to create “a mosaic image of Earth — a new ‘Blue Marble’ built bit by bit with your photos.”

“Need an idea of what kind of picture to take? Get outside and show us mountains, parks, the sky, rivers, lakes — wherever you are, there’s your picture. Tell us where you are in a sign, words written in the sand, spelled out with rocks — or by using the printable signs we’ve created,” which are here, in many languages.

“We’ll be monitoring photos posted to five social media sites: Twitter, Instagram, Facebook, Google+ and Flickr.”