Published on 21st Apr, 2012
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Dark Matter is Irritating:
http://www.eso.org/public/news/eso1217/
Hubble Turns 22:
http://hubblesite.org/newscenter/archive/releases/2012/01/
Discovery Barnstorms DC enroute to the Smithsonian
http://airandspace.si.edu/collections/discovery/http://smithsonianscience.org/2012/04/video-space-shuttle-discovery-circles-washington-d-c-before-landing-at-dulles-airport/