Recent content by thefredman

From the perspective of a 4D observer would 3D infinity appear to exist? Why/why not?

So yes? :p Just because it does't fit within the standard model; doesn't mean it is incorrect...JS... :P

So if the space between them expanded exponentially then the effect of gravity wouldn't cease to exist; but would move toward infinity, correct? Also, is there any proof that gravity isn't just some type of energy that exclusively moves towards to mass?

TBH, I'm not concerned with whether or not there is an unfilled void in which the universe can expand. My question applies to the recent discovery of gravitational waves. I am more interested to know if it's possible to differentiate between space and gravity. For instance, oceanic (water)...

Not sure what relativity has to do with the concept. If you simplify it down to 2 particles (a and b) that are far enough away that space is expanding faster than gravity can cause them to coalesce, will there eventually be a region between them that has no gravity whatsoever? or will it...

That doesn't make sense though. If I have a cup full of water and then expand the cup to a liter bucket faster than the water can fill the bucket than there will be areas where water doesn't exist... even if only for a time. Shouldn't the same apply for gravity?

Isn't that counter intuitive? If space is expanding faster than mass can propagate that space then there will be no mass in that region and therefore no gravity, correct? Or gravity is just everywhere?

If space can expand faster than the speed of light, then are there regions of space with no gravity?

Suppose there is one planetary body and 2 orbit objects. Object 1 orbits the planet at near escape velocity while object 2 orbits much further away at near the escape velocity at that distance. While both objects are moving relative to the planet they each share the same time frame of reference...

Over the course of 4.5 billion years would the difference be noticeable, like millions of years? Would the same rule apply to other planets in our solar system such as the moon or mars? Are rocks on other planets millions of years older or younger? Or are the effects of relativity not really...

Thanks for your reply. At what point does speed become relativistic? Is there a threshold that says any object that travels under this speed is not subject to relativity? Considering the age of the universe doesn't any speed become, at some point, relativistic? Even astronauts on the ISS are...

I guess I should have stated that I'm not a physicist and those calculations are over my head. My question is more geared towards a hypothetical situation. In a system where there are multiple Earth's traveling through space-time at different speeds what would the effect of relativity be...

Hi everyone, I have a few questions about relativity. I've been reading about relativity and its effects and I began to wonder at what point does it become a variable worth mentioning? Suppose there were 3 solar systems each with an Earth that revolved around the sun. Earth 1 does not...