We doubt many of you need a reminder but, just in case, we're here to let you know that Space Shuttle Discovery is set for lift off today, at 4:50PM ET. While all shuttle launches are certainly worth watching, this one's particularly notable for a number of reasons -- it's the last mission for Discovery and the third-to-last mission for the entire Space Shuttle program, and it's the first mission to carry a humanoid robot into space: our friend Robonaut 2. Head on past the break to watch Spaceflight Now's live coverage of the launch.

[Image: NASA / Flickr]

Update: Liftoff! Humanoid robots in spaaaaaace.


Watch live streaming video from spaceflightnow at livestream.com

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Space Shuttle Discovery launches at 4:50PM ET today with Robonaut 2 on board