What would the Earth look like if it were made of selfies? That’s the question NASA wanted to answer when it asked people to celebrate Earth Day by taking a selfie on April 22 and tagging it with #GlobalSelfie. The selfies were collected and used to create a mosaic image of Earth.

NASA painstakingly combed through more than 50,000 submissions from Twitter, Instagram, Facebook, Google+ and Flickr and selected 36,422 individual photos for the mosaic.

“We were overwhelmed to see people participate from so many countries. We’re very grateful that people took the time to celebrate our home planet together, and we look forward to everyone doing their part to be good stewards of our precious Earth,” Peg Luce, deputy director of the space agency’s Earth Science Division, told Reuters.

For a fully zoomable version of the selfie, visit GigaPan.