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wolfram74

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  1. Amount of work that once bought an hour of light now buys 51 years of it (2017) (washingtonpost.com)
    211 points 341
  2. Engine cooling – why rocket engines don’t melt (everydayastronaut.com)
    559 points 170
  3. Bricks and the Industrial Revolution (constructionphysics.substack.com)
    51 points 5
  4. The Unstoppable Battery Onslaught (caseyhandmer.wordpress.com)
    1 points 0
  5. Why NASA Abandoned the Gemini Rogallo Wing (youtube.com)
    2 points 0
  6. When Spreadsheets Attack (youtube.com)
    1 points 0
  7. Are Aerospike Engines Better Than Traditional Rocket Engines? (everydayastronaut.com)
    271 points 78