Success SpaceX Falcon 1 - Flight 4 - September 28, 2008

It's good to hear them using metric units for the commentary. I wonder if they also use metric units for design and hardware specs (fastener sizes etc)?

Anyone else noticed the "oh-oh" at 0:18 right after the woman says "We have lift-off"? :D i luld

Is it necessary to smooth that out? Might be overcontrol. We're talking about 10 million dollar launches here, the way of the future may not necessarily be graceful.

5,000,000 stars!...oh-boy-is-this-great! /milwaukee

So from a layman's perspective, what happens to the parts that fall back? What if they hit something?

You'll notice that they launched from an island and the trajectory of the flight up to the cut off of the second stage engine takes place over water. NASA, the European Space Agency and the Japanese Space Agency all do this. It drastically cuts the risk to anyone back on Earth.

US has shuttle replacement?
So why NASA recentrly ordered many flights on russian rocket and space ship?

This isn't a shuttle replacement. It's an experimental rocket launched by private investors.

The ARES rockets are in the testing stages now but they won't be certified as flight worthy before the projected retirement of the shuttle fleet.