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Kristin Fisher @KristinFisher
Leave it to #Hubble to get @POTUS tweeting about space https://t.co/MMdMvP34zl — PolitiTweet.org
President Obama @POTUS44
This was a fun briefing: My science advisor just showed me this Hubble shot of the most crowded place in our galaxy. http://t.co/E2SeO9tumt