Comments by "Digital Nomad" (@digitalnomad9985) on "" video.

  1. It took all the engineering SpaceX could muster to make soft cryogens (oxy/methane) work with fiber composite tanks, to save weight. At the current state of art, hard cryogens like hydrogen require metal tanks. Hydrogen is also bulkier per unit energy than methane, and burned in molar mix with oxygen, methane produces two molecules of water for every molecule of carbon dioxide. It is semi-clean, like natural gas, same stuff. A jet airliner in it's lifetime will insert more carbon into the atmosphere than NASA, SpaceX, and Virgin combined ever will in the forseeable future. When you've shut down civilian aviation, call me and I'll still have your travel plans booked.
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