Excuse my ignorance but what is CMB?
Cosmological Microwave Background
Thanks. What mechanism would cause the gravity waves?
I ask because there is a controversial theory that the universe actually consists of a number of interacting fields. They’ve always been there. What we observe as matter, time etc are the result of those fields.
I’m not an expert but pulsars do this I think. Stars spinning around each other sending ripples through space time.
Pulsars are made of matter, which runs into the how did it all start problem (if there was no big bang to create the matter)
Those mostly create magnetic and electomagnetic radiation. Some are also magnetars
Black holes spinning?
Those black holes allow the Penrose process which is somewhat similar to what I am talking about here.
There is already a link in my post for one big source of gravitational waves
Yes, but black holes are an accretion of matter, that as far as we know is locked away until it evaporates. For there to be a net increase in overall matter due to gravitational waves there’d need to be either another source of waves (as in the field theory) or the waves would have to produce matter at a rate in violation of E=mc^2+C (which could be wrong)
The original Big Bang also violates conservation of energy.
For the moment this is just a shower thought. More work would have to be done along these lines.Generally conservation of energy applies in a closed system, so wouldn’t apply at the creation of the system.
(Plus we can’t (yet) be sure what caused the Big Bang if it happened)
I’ve always liked the idea that matter, space and time are the way we observe the interactions of fields. So gravity waves make an interesting idea as to how part of it might work
Did you know there is some evidence that our brains are apparently aware of certain events before they actually happen. This isn’t supernatural but possible evidence of something going on outside of the space time we are familiar with. Or that time is not a straightforward arrow in one direction.
This comes from this discussion thread
Just a questions: how is this a showerthought?
I often think about this in the shower
P.S. : Also, i just read the rules and I believe I follow them
Agreed, this is the most on topic post we’ve had for a while.
This was a popular theory at one point: https://en.m.wikipedia.org/wiki/Steady-state_model
In addition to CMB being tough to explain, the distant universe is different — for example, quasars are far away/old. You would expect them to be more evenly distributed in a steady-state theory.
Sounds legit, I believe there are a few folks thinking about this stuff even outside of the shower though so I’ll defer to them.
This sounds like the “steady-state model,” which was popular in the 40s-60s, but fell out of favor.
Thanks 😊. This comes from a discussion at !askscience@lemmy.world
… from this discussion thread
Oh nice, thanks for the link. Not usually the kind of thing I expect in a shower thoughts community
