NASA @NASA
Since April 29, 1999, the @NASAEarth Observatory website has brought you Earth images and science stories that emerge from our work, satellite missions, in-the-field research & data models. Take a look back at 20 years of the Earth Observatory: https://t.co/u1CHCdJh8G #NASAEO20 https://t.co/A36SDKBBn9 — PolitiTweet.org