It took 36,422 individual photos from 113 countries around the world to create NASA's 2014 "global selfie" -- an interactive, composite picture of our planet.
In observance of Earth Day in April, NASA posed the question, "Where are you on Earth right now?" and invited people to reply with a photo.
Thousands of people did, uploaded their pictures to Twitter, Instagram or Google+ using the hashtag #GlobalSelfie. or posting them on Facebook or the photo site Flickr.
The mosaic image can be explored interactively using Gigapan technology that allows users to zoom in on any part of the globe.