At just after 4:50 PM EST today, space shuttle Discovery launched in Florida. Commander Steve Lindsey and the 5 other members of the STS-133 crew will deliver the Permanent Multipurpose Module and Robonaut 2, a humanoid robot, to the International Space Station. NASA’s uStream channel is below. At launch time, there were more than 40,000 people tuned in to uStream, along with many more watching NASA TV online.

Video chat rooms at Ustream

The NASA tweetup is certain to provide live, likely very enthusiastic, coverage. If you want slighter slower updates from NASA’s live blogger, follow the STS-133 launch blog. You can see all of NASA’s social media activity at Buzzroom.NASA.gov.

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NASA uStream chat: