Bradley_A_Pliam
Joined 4 years ago
Joined 4 years ago
If space is what fills an area between object A and object B and that space grows or expands. This is no different than object A moving away from object B. What's the difference? There seems to be none.
And what about particles we do see? What if the debris we know is out there (the stuff of collisions and non-congealed leftover particulates, early gases since its many light years away) over immense distances have an accumulative affect? We see the red sunset but do not discern any individual particles with our eyes.
Then there are the things we don't see. Dark matter... and so much of it. I'm guessing that disproving the relevance of all of this has proven tedious, and recounting it to a newbie like myself even more tiresome!
You are saying I'm a lay person? You nailed it. I'm quite curious though about what would be so "advanced" that pop-science writers would not want to at least allude to it, since just Doppler redshift observations seems like not such a sturdy foundation, especially without anything else buttressing it!
Separating "space itself" from the objects that are governed by universal laws is like saying there could be a north pole without a planet such as Earth. Take away Earth, you have no north pole. Take away objects in motion, you have no basis for talking about spacetime. That's just my intuition, but it seems to point to a gap in explanations, at least from science popularizers.
Frequency is precisely the necessary thing that needs to be considered as an observed phenomenon that can have alternative explanations, since frequency relates to shifting toward red.
Are you saying that density/luminosity is an independent way of corroborating universal expansion? I don't believe that's the case.
Neither luminosity nor redshift seem, IMHO, to be strong enough evidence to uphold a "preposterous" (to use Sean Carroll's favorite descriptive term for the world) theory that massive things are not just traveling but accelerating away from oneanother.
Does anyone know where this list of 4 or 5 evidences that the universe is expanding are that Sean Carroll outlines? I had the link but am not finding it!!
Clearly Einstein missed his opportunity to lead the way in devising a theory of quantum mechanics, he was using his intuition and his method of thought experiment, and did not progress our understanding there. But when it comes to larger, more stable phenomena, I'm not so sure his intuition was so far off