NASA Stennis Space Center
- Where NASA tests rocket engines.
- http://www.ssc.nasa.gov/

Warp Drive When?
- Have you ever wondered . . .
- http://www.lerc.nasa.gov/WWW/PAO/warp.htm

NASA Jet Propulsion Laboratory Technical Reports Server (JPLTRS) v2.0
- enter 'propulsion' into search and get 100+ reports
- http://techreports.jpl.nasa.gov/

Emerging Possibilities for Space Propulsion Breakthroughs
- article by Marc.G.Millis
- http://www.lerc.nasa.gov/WWW/PAO/html/warp/ipspaper.htm

Breakthrough Propulsion Physics Program
- Experiments and theories regarding the coupling of gravity and electromagnetism, the quantum vacuum, hyperfast travel, and superluminal quantum effects.
- http://www.grc.nasa.gov/WWW/bpp/