I didn’t get a chance to mention it at the time, but SpaceShipOne, the world’s most fantastically beautiful rocketship, had its first supersonic test on December 17th. Note that this is the first privately-built aircraft to break the sound barrier.
The Mojave weblog also has a nice page with photos of the launch, including the heart-stopping (but luckily not show-stopping) landing. I can’t wait to hear about the next flight!