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Analysis indicates that the universe’s expansion is not accelerating
71–80 of 218 posts
Re: Analysis indicates that the universe’s expansion is not accelerating
#72I have a great deal of respect for the sciences but sometimes astronomy just feels like one giant guessing game: age of the universe, big bang starting as a joke and all the "first minute" timelines thereafter, dark energy and dark matter (code for we have no idea what it is) vastly outnumbering everything else, and now questioning the Nobel Prize-awarded universe expansion. Meanwhile, asteroids the size of buses+ ke…
Consider the scales involved. It's amazing that a species that is 99% chimp genes can even think and deduce phenomena of that size; don't ask it to get it right the first time.
All of that without having traveled farther than one light second from its home.
Re: Analysis indicates that the universe’s expansion is not accelerating
#73Earlier quoted context omitted.
That's a feature! If you want to be certain, you need religion, not science. And of course, the people concerned with tracking near-earth asteroids are not connected in any way with cosmology.
what? no. religion is not certain which is evidenced by the numerous sects of christianity with their own interpretations of the same book. while science might not have a definitive answer for everything, they distinguish from fact and theory.
> religion is not certain
Ask any religious person if their religion teaches truth or lie, then ask them if that truth is the absolute truth. We'll wait.
Re: Analysis indicates that the universe’s expansion is not accelerating
#74Earlier quoted context omitted.
> The relative jump in difficulty from interstellar to intergalactic is much smaller than from interplanetary to interstellar. Interesting way to put it... This doesn't seem that accurate. With sufficiently advanced technology, many of which we already possess, we could expect to propel a minute spacecraft to a considerable fraction of the speed of light, and reach nearby stars possibly within the end of the century.…
If you can get to a star 100 light years away, you can get to Andromeda. It doesn't require going faster, just waiting longer.
Imagine doing that, and being greeted with
ALL THESE WORLDS ARE YOURS EXCEPT ANDROMEDA
Re: Analysis indicates that the universe’s expansion is not accelerating
#75I would not be surprised if the universe was somewhat elastic, expands and then contracts and then expands ad infinitam. After all, existence in itself is irrefutable and cannot not exist by definition. If we subscribe to a theory of the multiverse, set theory, likelihood, and interaction driven evolution based on gradient type of fundamental laws. Locally changing. Obviously everything sharing a fundamental quality…
> After all, existence in itself is irrefutable and cannot not exist by definition. I can say the same about forgnoz, which is something I've just invented that must exist by definition. You'd need to try a bit harder to make existence actually inevitable.
You’re being downvoted, but your point is true — something can exist “by definition”, and yet not exist in our real world. The thing that exists “by definition” is just a version that we have imagined to exist by definition. But imagining something with property X doesn’t imply anything can actually be found with property X.
Side-note: the deontological argument is an argument for the existence of God, which uses the same principle as the grandparent. “Imagine God. Imagine God is good. A good God should exist, because otherwise that god is not good. Therefore, the good God we imagined has the property of existence. Therefore God exists”. The issue is exactly the same — we can imagine something with property X, but that doesn’t mean we can find something with property X
Re: Analysis indicates that the universe’s expansion is not accelerating
#76I have a great deal of respect for the sciences but sometimes astronomy just feels like one giant guessing game: age of the universe, big bang starting as a joke and all the "first minute" timelines thereafter, dark energy and dark matter (code for we have no idea what it is) vastly outnumbering everything else, and now questioning the Nobel Prize-awarded universe expansion. Meanwhile, asteroids the size of buses+ ke…
There has been a lot of progress towards mapping all near-earth asteroids, at least. That's a lot better than the previous tactic of putting one's fingers in one's ears and humming.
Re: Analysis indicates that the universe’s expansion is not accelerating
#77Re: Analysis indicates that the universe’s expansion is not accelerating
#78I have a great deal of respect for the sciences but sometimes astronomy just feels like one giant guessing game: age of the universe, big bang starting as a joke and all the "first minute" timelines thereafter, dark energy and dark matter (code for we have no idea what it is) vastly outnumbering everything else, and now questioning the Nobel Prize-awarded universe expansion. Meanwhile, asteroids the size of buses+ ke…
There has been a lot of progress towards mapping all near-earth asteroids, at least. That's a lot better than the previous tactic of putting one's fingers in one's ears and humming.
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Re: Analysis indicates that the universe’s expansion is not accelerating
#79Anyone know how credible this is? If true, then that means the big bounce is back on the menu, and the universe could actually be an infinitely oscillating system.
> If true, then that means the big bounce is back on the menu I don't think so. Deceleration does not imply recollapse. AFAIK none of this changes the basic fact that there isn't enough matter in the universe to cause it to recollapse. The expansion will just decelerate forever, never quite stopping.
Wait but decelerating forever does in fact imply recollapse doesn't it?
Re: Analysis indicates that the universe’s expansion is not accelerating
#80Earlier quoted context omitted.
> If true, then that means the big bounce is back on the menu I don't think so. Deceleration does not imply recollapse. AFAIK none of this changes the basic fact that there isn't enough matter in the universe to cause it to recollapse. The expansion will just decelerate forever, never quite stopping.
Wait but decelerating forever does in fact imply recollapse doesn't it?
I assume decelerating forever means asymptotically approaching not collapsing.