Thankfully, Chris Hadfield says he's got lots of pictures still to share, so even when his mission ends, he'll still be tweeting.
With Chris Hadfield coming home from the ISS today, I would like to thank him for getting social media 100% right. He entertained, informed and inspired us all.
The boy's picture of the ISS with Chris Hadfield inside it
(If you haven't seen Chris Hadfield's cover of David Bowie's Space Oddity, you should go check it out now. It's yet another reason to love social media http://youtu.be/KaOC9danxNo )