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Spacetime can expand and galaxies accelerate without a force being applied? I guess I'm just a little skeptical
originally posted by: MarsIsRed
Spacetime, however, can do what the heck it wants! It has no such limits imposed upon it.
Dismiss Arp's work because it "rings alarm bells" if you like, you're not the only one. Halton Arp thought that publishing this work important enough to ruin his career over it. I thought it was worth a look.
Also, I'm not sure what a discordant redshift is... and the fact your link has Arp associated with it is ringing alarm bells.
originally posted by: Soylent Green Is People
originally posted by: dfnj2015
We have no evidence nothingness ever existed or can possibly ever exist. So based on the evidence, somethingness has always existed. To assert nothingness is possible you have to prove it is possible. Imaginary thoughts are meaningless.
this would be more of a philosophical question, but WHY and HOW does that "somethingness" exist. Why is there something at all?
originally posted by: Devino
Spacetime can expand and galaxies accelerate without a force being applied? I guess I'm just a little skeptical
originally posted by: MarsIsRed
Spacetime, however, can do what the heck it wants! It has no such limits imposed upon it.
originally posted by: Pearj
For those saying energy cannot be destroyed..
I don't think that's true.
"Natures way is to decay."
I believe the term is called Entropy.
It can describe the end of the universe, with the loss of all heat as being inevitable.
There will eventually be no more energy to expend.
..a gloriously gracious end.
originally posted by: EvilAxis
originally posted by: Soylent Green Is People
originally posted by: dfnj2015
We have no evidence nothingness ever existed or can possibly ever exist. So based on the evidence, somethingness has always existed. To assert nothingness is possible you have to prove it is possible. Imaginary thoughts are meaningless.
this would be more of a philosophical question, but WHY and HOW does that "somethingness" exist. Why is there something at all?
I think dfnj2015 is correct. The concept of nothingness is very strange. It cannot be imagined. Because we know somethingness exists we suppose that nothingness could exist. But 'nothingness exists' is an oxymoron. If we try to remove the 'exist' out of it, we get 'nothingness does not exist', which means 'somethingness'. Nothingness is a logical impossibility.
So the answer to, "HOW does that 'somethingness' exist" is "how could it not when 'nothingness existing' is a logical impossibility?"
If the big bang marks the beginning of spacetime, questions of what caused it (i.e. what came before) make no sense - there is no before time began.
originally posted by: Pearj
a reply to: MarsIsRed
If energy never faded, then we would have perpetual energy machines everywhere. I had a few videos lined up for you but I don't think they're necessary. We may just be thinking of the word "destroyed" differently.
Supernovae play a significant role in enriching the interstellar medium with the heavier atomic mass chemical elements.[5] Furthermore, the expanding shock waves from supernovae can trigger the formation of new stars.[6][7] Supernova remnants are expected to accelerate a large fraction of galactic primary cosmic rays, but direct evidence for cosmic ray production was found only in a few of them so far.[8] They are also potentially strong galactic sources of gravitational waves.[9]
Yes, I agree, there is always a force. Not sure about the "stagemaster" part, is that the "unmoved mover" philosophy? I guess "God did it" is the best explanation I have found so far.
originally posted by: MarsIsRed
originally posted by: Devino
Spacetime can expand and galaxies accelerate without a force being applied? I guess I'm just a little skeptical
originally posted by: MarsIsRed
Spacetime, however, can do what the heck it wants! It has no such limits imposed upon it.
There's always a force involved. But spacetime is the stage upon which these things play out. I guess the stagemaster isn't a part of the play.
Or maybe...
originally posted by: Soylent Green Is People
a reply to: St Udio
Or maybe...
(1) Our estimates are off for the ages of stars that we think are almost 15 billion years old.
For example, science estimated the age of a star named HD 140283, aka the "Methuselah Star", to be 14.5 Billion years old, while the universe is thought to be only about 14 Billion years old. However, science also thinks that their estimated age of the star could be wrong, because estimating a star's age is not an exact process.
originally posted by: St Udio
what gets me are individual stars, the light analysis reveals are way older than the Galaxy they are surrounded in...
Just like the merging of our Milky Way with Sagittarius.
originally posted by: wildespace
originally posted by: St Udio
what gets me are individual stars, the light analysis reveals are way older than the Galaxy they are surrounded in...
Galaxies aren't static things, they merge and form new galaxies. The merging creates new stars and new galaxy structures (like spiral arms).
originally posted by: skywatcher44
Of course the universe did not start from a flash/Bang how could it have ?