SAN FRANCISCO (KGO) -- Calling all cloud gazers -- NASA needs your help. Until April 15, you can participate in the Citizen Science Cloud Observation Challenge.
Anyone can upload up to 10 photos per day.
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NASA wants all types of clouds. All of the photos will be used to help validate data from its Earth-observing satellites.
The people who send in the most photos will be congratulated by a NASA scientist.
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Click here for more information on the challenge, and how to participate.