From First Principles

Artemis II, Apollo, and the Physics of Going Back to the Moon (EP. 24)

38 snips
Feb 4, 2026
They walk through Artemis II mission mechanics, including translunar injection, free-return trajectories, and Orion’s high Earth orbit checkout. They compare SLS and Saturn V engineering and political trade-offs. They debunk Apollo hoax claims about radiation belts, flags, shadows, and missing stars. They highlight physical proofs like retroreflectors and orbital imagery.
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INSIGHT

Deep-Time Cave Art Dating

  • Archaeological dating of cave mineral crusts can set minimum ages for rock art, pushing human symbolic behavior back >60k years.
  • Continuous reuse of sites shows long-term cultural continuity.
INSIGHT

Mountains Warm Faster Than Lowlands

  • Mountain regions warm faster than lowlands, causing elevation-dependent climate change and snow turning to rain.
  • Reduced snowpack threatens water supplies and increases flood risk downstream.
ANECDOTE

Dogs Learn Words By Overhearing

  • Lester describes a dog vocabulary experiment where dogs learned word–object mappings by overhearing conversations.
  • Herding breeds like border collies succeeded at ~80% after passive exposure without rewards.
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