Take a selfie for NASA on Earth Day!

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Tuesday is Earth Day and NASA is asking everyone to take part in a special event to mark the occasion.

NASA’s #GlobalSelfie event aims to create a mosaic image of Earth made up of portraits of people submitted over social media.

NASA plans to follow five social media sites: Twitter, Instagram, Facebook, Google+ and Flickr.

You just need to get outside, take a picture of yourself, and let NASA know where you are! Then, upload the picture to one of the sites and use the hashtag #GlobalSelfie.

Click here for more information on the #GlobalSelfie project. They even have printable signs in a variety of languages!