Back when Mike Massimino sent the first tweet from space on May 12, 2009, who could have conceived that one day every Dawn, Spirit and Philae would have their own Twitter accounts? -Curated from
  1. Spirit and Oppy
  2. NASA's Dawn Mission
  3. Messenger
  4. ESA Rosetta Mission
  5. Philae Lander
  6. NASA's Voyager 1 & 2
  7. NASA's Maven Mission
  8. Curiosity Rover
  9. NASA's New Horizons
  10. ISRO's Mars Orbiter
  11. And even though he's located on Planet Earth now, let's include Mike Massimino, as the guy who kicked it all off!