Replies

“Point understood, but inapplicable. There isn’t any indication that Earth’s history is no more than 10,000 years - with or without time dilation.”

That statement is false and pure nonsense that is utterly divorced from reality. Such a statement is no better than the worst of the Global Warming and Climate Change delusions.

“We’re also not moving near-light-speed relative to most other things in our galactic supercluster.”

Of course we are not, and I never said we were.

“Those “most distant galaxies moving near light speed” are already billions of lightyears away; if our local geologic/cosmological histories are indicative of billions of years, and theirs are too (insofar as we can deduce from their structure), and we’re both on basically opposing sides of expanding space, then the passage of time in the intervening “non-moving” space must be much older still.”

That statement is entirely false and demonstrates how you lack a proper understanding of the related astrophysics and astronomical observations. There is no such a thing as the “intervening ‘non-moving’ space” you use in your description. We are currently observing an expanding Universe. The volume of space in the Universe is expanding everywhere at the same time. The volume of space intervening between the Earth and the edges of the observable Universe are expanding, and they are certainly not “non-moving” space. The amount of expanded space within in our local group of galaxies is too insignificant to be obviously relevant to their own spatial dimensions, just as the lower velocities of objects on the Earth in the macroscopic world are too insignificant to be readily apparent outside a physics experiment.

“Yes, time dilation occurs to varying degrees under varying conditions, but we’re not seeing any local indication of “short time” for Earth, and conditions imputing “short time” require extremely high energies which few structures can survive intact.”

You should realize that statement was a bunch of irrelevant mumbo jumbo that has little to do with actual science. A hobbyist in Seattle collects surplus atomic clocks. He conducted an experiment for his sons. They synchronized a number of atomic clocks at home near sea level. They then loaded half of the synchronized atomic clocks onto their van and drove the van up to a lodge on the upper slopes of Mount Ranier for the weekend. When they returned home to Seattle they compared the atomic clocks they took high up on Mount Ranier to the other half of the atomic clocks they left at home deeper in the Earth’s gravitational well near sea level. They found a measureable difference in the passage of times recorded by the atomic clocks. So what you are incorrectly labeling as “short time” or a difference in the passage of time, time dilation, was measured and observed right here on the Earth due to the differences in the strength of the Earth’s gravitational field at different altitudes. So, your comment, “conditions imputing ‘short time’ require extremely high energies which few structures can survive intact” is total rubbish and totally non-scientific.

The time dilation effect being observed with respect to the galaxies nearer the edge of the Universe is principally due to their greater velocity as a fraction of the speed of light. There is no such correspondingly great acceleration in velocity away from the Earth, Sun, and Milky Way Galaxy because of their mutual gravitational attraction keeping them together as a group traveling at near the same relative distances and velocities with respect to each other. Consequently, they experience the same relative differences in time dilation with each other versus the speedier galaxies on the edges of the observable Universe.