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I know HN readers have a love affair with SpaceX but my dad's company is launching a rocket on Thurs at Vandenberg and it should be fun to watch:

The Atlas V uses the very cool Russian designed RD-180 engine: http://en.wikipedia.org/wiki/RD-180

The documentary The Engines That Came in from the Cold is an interesting look at these engines and the NK-33's, and US/Russian collaboration.

I'd also like to add that Orbital Sciences is another great space launch company that's often forgotten about. They're HQ is also on "Warp Dr.".