An astronaut is using microblogging site Twitter to keep people up to date with his space mission.
He has almost 250,000 followers. He said he will tweet whenever he can but said this might not be very often. Don't expect him to get involved in the MPs expenses debate.
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Massimino's last five tweets were:
2:11 PM May 11th I'm going to put my spacesuit on, next stop Earth's orbit.
11:52 AM May 11th Final check with the doctors, getting ready for breakfast. We launch today!!
12:59 AM May 11th I'll tweet when I can from orbit, but it might not be much, follow us after the launch 24/7 on NASA TV, www.nasa.gov/ntv and NASA twitter
12:57 AM May 11th Thanks to all who have been following me, we launch tomorrow!!!! from web
12:56 AM May 11th Enjoyed my last day on the planet for a couple of weeks with some study, practice, and last minute prep, but mostly trying to relax.