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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...

  • 2650 topics
  • 37069 replies
Tautology In Special Relati... - last post by phizzicsphan

Astronomy and Space

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

  • 1207 topics
  • 23036 replies
Wolf Moon - last post by CraigD

Engineering and Applied Science

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

  • 245 topics
  • 2445 replies
Is There Any Option For Me... - last post by fahrquad