The Known Universe

If you liked Powers of Ten, the iconic documentary from the 70s demonstrating the scale of the universe, you'll love this. It's like an updated version of the aforementioned, giving a good impression of what astronomers presently know about space - and how much yet remains to be found.
There's no narration, instead your journey through the lightyears is accompanied by soothing chill-out sounds. (an)

--awe-inspiring ride, 7 mins--

--additional information (see link box):

• American Museum of Natural History Official Site
• Download of Digital Universe Atlas @ Hayden Planetarium