Perkinsjc12

Light yes. But what about gravitational waves?

I suggested in another thread that if the universe exists in reverse, perhaps we can observe in the present, the effects of objects that exist in the immediate past and that these effects may be the shadowy dark matter that we know to exist but cannot directly detect. Maybe that is because it exists ever so slightly in the past.

I am not a man of Physics so my post is more philosophical than scientific. But it occurred to me that all observations are made in the present so a logical frame of reference for the passage of time would also be the present (at least philosophically if not mathematically). With such a frame of reference, an object would not "move" forward in time, but rather it's past would propagate (?) further back in time from the present. And if two objects can occupy the same space as long as they are separated by time, then how much time need elapse before this could occur. If it is infinitesimal then could an object which is infinitesimally separated from the present, time wise still have observable effects in the present. I've been trying to reconcile the observations in quantum physics where a photon can seemingly go back in time and change it's properties from a particle to a wave and vice-versa. And if time does indeed propagate negatively from the present when viewed from a present frame of reference, then it might be possible that an object can exert a force on the present while existing ever so slightly in the past. Could that be dark matter? Could that be plausible mathematically?

Ok, I'm with you. So if we can draw an analogy between movement through space and movement through time, then our movement through time also is dependent on frame of reference. When I was seven years old, I broke my arm trying to jump a drainage ditch on my bicycle. Last year, that event happened 36 years ago. As I type, that event happened 37 years ago. The event is moving further back in time from my frame of reference (the present). So maybe we are not moving forward through time but rather our past is traveling backwards in time.

Just thinking out loud. I am told that time is very closely bound to space and that there is a possibility that space is curved. So could it not be possible to move negatively (?) in time. That is move nearer to a point of origin in time without actually moving backwards in time. It hurts my brain to think about it but the nearest analogy I can come up with is motion through space which may be an invalid comparison. You get in your car and go get a loaf of bread from the store then you turn around and return home. While you are traveling closer to your point of origin you did not put the car in reverse and backtrack along the same path. Completely unsubstantiated but submitted to spark conversation. Do we have any ideas on what force if any propels us through time?

New to Physics, but it occurred to me that if for every action there is an equal and opposite reaction (At least in 3-D macro space) Could this same Law be true for propagation (?) along the 4th dimension of time? As an object ages or moves forward in time, could an equal and opposite reaction be that it also moves back in time? And if so, could these objects traveling negatively in time be the long sought after dark matter and an explanation of super symmetry? Could this explain some of the quirks of Quantum mechanics? Perhaps instead of a time line, it should be better categorized as a time circle. With one half of the circle being positive time and one half being negative time. Not sure if the idea holds water and not sure how you would test it and not smart enough to prove anything mathematically. Thoughts?

Question from a neophyte - If the Universe is 46 billion light years in diameter (Wikipedia) yet only 13.8 billon years old then is or has the universe expanded faster than the speed of light, does the outer 2/3 of the universe predate the big bang, does Wikipedia have it wrong, or is there one of those counterintuitive "warped or folding space phenomenon going on? I'm sorry. 46 billion light year radius according to Wikipedia