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TNick
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Indeed, it is an absolutely terrible fit. Note how the line is below almost all of the data points.BillSaltLake said:Looks like a terrible fit. At z=1, the least-action predicted bightness is ~2/5 of a mag low, which is 1.4x too bright. If I remember right, the observed brightness deviation (cf a matter-dominated Universe) is only ~1.5x at z=1.
twofish-quant said:Just FYI for why tired light models have problems.
1) If you have light change speed, it's like going through a lens. If you go through a lens then there are a ton of effects that we don't see. In particular, if you are moving through a lens then things that are far away get blurry.
2) More to the point if there is something that causes supernova light to go funny on the way to the earth, that whatever causes the light to go funny will also affect anything beyond the supernova. Which will result in all sorts of lensing effects.
Well, we know that the speed of light doesn't change to a high degree of accuracy. This doesn't necessarily mean it can't, but it certainly doesn't (at least not by any significant amount).bill alsept said:How do (1) and (2) prove that light can't change speed?
Because when you have a change in the speed of light it impacts everything we see whose light was en-route to us before the change in speed. So, if there were changes that started to be detectable at, say, 1 billion light years, they would be even more apparent at 2 billion light years, and so on. But the speed of light is highly uniform all the way out to the CMB.bill alsept said:How do we know "anything beyond the supernova" is not affected?
BillSaltLake said:Looks like a terrible fit. At z=1, the least-action predicted bightness is ~2/5 of a mag low, which is 1.4x too bright. If I remember right, the observed brightness deviation (cf a matter-dominated Universe) is only ~1.5x at z=1.
Arto Annila suggests that the expansion of the universe can be explained by the idea that space itself is quantized and expanding, similar to how particles in an atom move in discrete energy levels.
Annila's theory is supported by observations of the redshift of light from distant galaxies, which is commonly attributed to the expansion of the universe. However, Annila argues that this redshift could also be caused by the quantized expansion of space.
If Annila's theory is correct, it could potentially challenge the widely accepted idea of dark energy and change our understanding of the fundamental forces and laws that govern the universe.
Annila's theory is one of several competing theories that attempt to explain the expansion of the universe without the need for dark energy. Other theories include modified theories of gravity and theories that propose the existence of a fifth fundamental force.
Further observations and experiments will need to be conducted to test Annila's theory and determine its validity. This may involve studying the redshift of light from more distant galaxies, as well as conducting experiments that could potentially detect the quantized nature of space.