Several mind-boggling conjectures about the existence of advanced alien civilizations have been made by astrophysicists who have found that for the last 7 billion years or so something is pushing the galaxies, adding energy to them. Something they are calling “dark energy,” a force that is real, but so far eludes detection. One of … Continue reading “Indistinguishable from Physics” –Three Extraterrestrial-Technology Conjectures