There’s an emulator for the hardware used on the Apollo missions! This is the gentle introduction. gulfstream/2633
Identify stars with Andriod: point a G1 at a star, and, using GPS, accelerometer, and compass, it’ll tell you what you’re looking at. (Does the iPhone … gulfstream/2613
Nice step-by-step views of the components of the Internation Space Station in chronological order. gulfstream/2571
The Physics of Space Battles - Space battle - Gizmodo
What space battles might actually be like--what the ships would look like, the weapons, and so on.
One Giant Leap to Nowhere
decent piece on a familiar story: the decline in space ambition
NASA presentation
Presentation on why NASA should exist
APOD: 2007 May 28 - A Hole in Mars
The Space Review: "Spirit of the Lone Eagle": an audacious program for a manned Mars landing