Physics / Math / Engineering

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1. Physics and Mathematics

   • Alternative theories

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

   59.1k

   posts

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   • Black and White Holes
   • By LaurieAG, Yesterday at 01:56 AM
2. Astronomy and Space

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

   26.6k

   posts

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   • Missing pulsar problem (MPP)
   • By Dandav, November 13
3. Engineering and Applied Science

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

   3.3k

   posts

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   • Is connecting a device's power cable through a wall socket electronically different from using a power strip
   • By OceanBreeze, Wednesday at 06:48 AM