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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...

  • 2821 topics
  • 39583 replies
Division By Zero - last post by sanctus

Astronomy and Space

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

  • 1253 topics
  • 23717 replies
Near Earth Objects - last post by Deepwater6

Engineering and Applied Science

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

  • 268 topics
  • 2565 replies
Cummins Beats Tesla! - last post by exchemist