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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...

  • 2861 topics
  • 40000 replies
With "undetectable"... - last post by LaurieAG

Astronomy and Space

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

  • 1268 topics
  • 23923 replies
New: Earth-Like Exoplanet F... - last post by exchemist

Engineering and Applied Science

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

  • 269 topics
  • 2569 replies
Covalent Bonding Of Steel A... - last post by exchemist