What If Humanity Never Masters Fusion?
https://t.co/kBquydHjZl
What if fusion power never becomes practical? Humanity still has solar, fission, storage, beamed power, and enough known physics to build a spacefaring future.
Antimatter Propulsion
https://t.co/tZuG8bKU7V
Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft.
The inside of a sodium-cooled reactor.
Liquid sodium flows like liquid water, but is ~100x more thermally conductive & ~10x higher boiling point.
A tiny bit of sodium flowing through 1mm fuel gaps is enough to extract megawatts of heat at atmospheric pressure without boiling.