Here’s another idea I just came up with, that doesn’t harness dark energy itself so much as the Hawking radiation of the de Sitter horizon.
A civilization could build a sphere around a cold black hole (I.e., a rotating or charged black hole whose Hawking temperature is lower than that of the cosmological horizon; such a black hole would need to be very close to extremal). The sphere would catch the Hawking radiation from the cosmological horizon, and then feed some of it into the black hole in such a way as to further decrease its temperature (by pushing it closer to extremality). The sphere could use the rest of the energy for its own needs. The black hole and the sphere would keep growing over time. -Mason -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
