Jeffrey Kripal, How to think impossibly about souls, UFOs, time, belief, and everything else, 2024.
People believe impossible things because impossible things happen to people. You don't need to believe any of the belief systems that build up around such extraordinary experiences to acknowledge that the experiences in fact happened.
If there is indeed truth to astrology, then I think it's axiomatic that we are wittingly or otherwise in touch with other 'universals', beings from the elite of all those trillions of stars around us. Impossible? Given our Cartesian thinking, yes. The unknown otherworldiness behind any such communication—and there is lots of evidence that something unknown and otherworldy is going on—requires impossible thinking.