NASA releases earth day global selfie mosaic (video)

NASA invited people from all over the world to take a "selfie" and share it with the world on social media for Earth Day this year, HNGN reported, citing ABC News.

Unveiling the 2.3 billion-pixel sized "global selfie" on Thursday, the mosaic showed more than 36,000 pictures of people and places around the world in commemoration of Earth Day, the U.S. space agency said.

After more than 50,000 images tagged #GlobalSelfie were uploaded to social media sites like Facebook, Twitter, Instagram, Google and Flickr on April 22, 36,000 individual selfies were used. 

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