NASA is inviting everyone to take a selfie and post it to Twitter under the hashtag 'GlobalSelfie.'
Five NASA missions are heading into space this year and NASA is organizing a campaign called 'Earth Right Now.'
NASA is inviting everyone to take a selfie and post it to Twitter under the hashtag 'GlobalSelfie.'
Five NASA missions are heading into space this year and NASA is organizing a campaign called 'Earth Right Now.'