NASA, of course, has a Facebook page, liked more than 1 million times, and so does Curiosity. Information posted there is also posted on Google+ as well as on the Twitter accounts. Jason Townsend, NASA’s deputy social media manager, said NASA will experiment with Google+ hangouts, too.
Read more: http://readwrite.com/2012/08/07/nasa-stuns-with-mars-landing-and-social-media-campaign