Jump to content

Physics / Math / Engineering


Physics and Mathematics

  1. Alternative theories

Formulae, ideas, theories, speed of light, black holes...

  • 2915 topics
  • 40734 replies
Can You Pinpoint A Photon O... - last post by Vmedvil

Astronomy and Space

Space, Human spaceflight, space probes and the exploration of our Solar System. No personal theories or speculation please.

  • 1280 topics
  • 23970 replies
Near Earth Objects - last post by LaurieAG

Engineering and Applied Science

The art of applying science to specific problems. Materials, construction, technical issues and related topics.

  • 274 topics
  • 2578 replies
The Jet propulsion with clo... - last post by qumf