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.