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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...

  • 2686 topics
  • 37502 replies
Atoms And Singularities - last post by CraigD

Astronomy and Space

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

  • 1220 topics
  • 23122 replies
What Is A Sun? - last post by ClaudeGaiven

Engineering and Applied Science

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

  • 253 topics
  • 2509 replies
What Would You Do? - last post by gradenG