Time for a particular object slows down relative to an object that is stationary(like a timer on a fast moving airplane relative to a timer on the ground previously synchronized together before the airplane and the plane’s timer left the ground). It’s not about time slowing down in space it’s about time slowing down for a particular object the faster it gets to the speed of light. A ship may go near the speed of light to Alpha Centauri and back in over 8 years our time. Yet for the travelers on the ship, they will have experienced only several months flight time. One’s spouse who is 2 years older than the other goes on such a trip but when the spouse come back, one is 6 years older than his or her spouse. That is how time works at supra relativistic speeds. The Earth in it’s orbit about the sun experiences it’s own time distortions relative to the rest of the universe and the sun itself is in motion carrying it’s planets with it. We can only speak of time as we experience it here on Earth but we do know that time is not a fixed constant relative to other objects in motion. Gravity is said to affect time as well as the rate of motion and the mass of an object. We have to make synchronal time adjustments for example when we attempt to program on going space probes for maneuvers as their on board clocks may slow down relative to us(not that their clocks are actually slowing down, just that their faster velocities relative to us cause experiential time to slow incrementally over time relative to Earth bound observers).
I also don't believe that the Event Horizon of a Black Hole can alter time. A black hole is simply an imploded star with so much gravity it won't allow photons to escape. There is not a person on this rock that knows otherwise. They can do their math all day long and still won't know how the "singularity" basketball appeared out of nowhere to cause the Big Bang.
I believe other than some proven physics, mankind does not have the mental capacity to understand the cause and effect of the Universe. It could be some kid playing with his toys like Men In Black...or a supreme being. Yeah, and then where did it come from and how and when? We'll never know. Have a beer and enjoy life.
I never was good at the time/distance/speed thing. Must be a mental block. If I am getting it, the spouse that is on earth is now older than the one that was in space? How does that time effect aging? For me, time isn’t real. Its’ just a mathematical measurement. It’s not a force.
So, would you know how fast our little galaxy is moving in unison? Is there any drag? Or would that be gravity. Is the centrifugal force taken into account? (I always thought that is how the flying saucers got around) Now you got me wondering about all this stuff. I loved reading about physics but not the math. LOL Took physics long after I lost the algebra skills.
No need to reply. I’ll do some research if I’m not distracted.