If time slows down for an observer as velocity increases, then the earth is moving as fast as the speed of light away from objects at the edge of the observable universe. However when those objects emitted that light, the relative speed was less. So, with regard to the photons that left, would the local time dilation for a galaxy at the edge of the visible universe be faster than here on earth? By the time that light reaches us the earth is moving much faster and therefore slower through time.
How about the local time dilation at every point the photon passes through? Is all of this taken into consideration before saying that dark energy is ripping the universe apart?
Or is it possible that time is slowing down across the entire visible universe? Our visible universe is moving MUCH faster than speed of light away from whatever is 1 trillion light years from us. There is no reason to believe there isn't more stuff an infinite distance away right? So with that said, what is the universal baseline for time? How could there be one? We are completely stuck in time in relation to objects trillions of light years away from us. Or are we? What happens when the distance between points in space is accelerating faster than light? Do they go backwards in time relative to us? For that matter how do we know c (the speed of causality) is fixed? Can it be changing over time/space?
