Can the acceleration of the Universe be analogous to apparent acceleration in a airplane?
When decelerating, during flight, from a fast cruise speed toward a slow approach speed, I notice that as the rate of decrease in speed constantly increases, the sensation is one of deceleration. But once the rate of deceleration is stabilized, constant, and unchanging, the sensation becomes one of hanging there presumably at a steady speed – there is no perception of deceleration (or even of speed for that matter) even though still decelerating. Even more deceptive, if slight control changes are made which cause a constantly decreasing rate of deceleration, the sensation becomes one of acceleration even though the aircraft is still decelerating (but at a decreasing change in the rate of the decreasing change of speed). The sensations you describe fit perfectly into Einstein’s general theory of relativity; in fact, you have experienced the so-called “equivalence principle” first-hand! The equivalence principle states that it is impossible to distinguish a frame which is in constant acc
