See also:

• Science: Physics: Alternative  (177)
• Science: Physics: Relativity: Alternative  (61)
• Science: Technology: Energy: Unproven Concepts  (48)

• An Advanced Interstellar Propulsion System - A site detailing a unique and novel method for exploring extreme distances in space.
• Antigravitation Engine Site - Describes Chinese theories, experiments and data analyses of an antigravitation engine and the related phenomena.
• Field Resonance Propulsion - Postulates magnetic/gravity interactions.
• Gravitational Propulsion Research - Yahoo group covering news, science but also fiction.
• Gyroscopes As Propulsion Devices - Gyroscope based technology could provide an alternative form of propulsion.
• Stellarotor / Centrifugal Pulsatory - A little theory (omniradiation, gravitation, centrifugation as effects of it, dynamic mirrors, ...) and some models as direct derivatives from mechanical vibrators, crank-conn.rod-slider mechanism, eccentric mathematics.
• Theory for Gravitic Propulsion - A theoretical discussion of using gravity as a means of interstellar space propulsion. Touches on the theories of matter, energy, and space time.