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Physics / Math / Engineering


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Physics and Mathematics


  1. Alternative theories

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

  • 3133 topics
  • 46993 replies
Relativity And Simple Algebra - last post by Moronium

Astronomy and Space

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

  • 1336 topics
  • 24323 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.

  • 291 topics
  • 2661 replies
How Can You Improve On... - last post by montgomery