How many of you atheists believe in the Big Bang Theory?

[Thumpalumpacus]

Like dark energy, or something pertaining to dark matter? I'm actually not sure that I would know the answer to this question - I'm really asking.

Perhaps? I don't know. I don't know if dark matter or dark energy are growing.

[HappySkeptic]

When you mentioned that "gravitational redshift isn't a thing", earlier, would that include photons from very distance sources that pass near large sequences of galaxies on their route to us?

No.  A photon does not change energy by the gravity it encounters on its trip.  Gravity is a conservative field.  Any energy gained from falling into a gravity well is lost by the same amount when coming out.

Gravitational redshift only occurs by the photon "originating" in a gravity well, and being observed in flatter space.  In that case, it is the time dilation within the gravity well (where the photon is created) compared to where it is observed that causes the shift.

[neil]

Like dark energy, or something pertaining to dark matter? I'm actually not sure that I would know the answer to this question - I'm really asking.

Perhaps? I don't know. I don't know if dark matter or dark energy are growing.

If dark matter or dark energy are growing, what would that suggest?

Same with if dark matter or dark energy are not growing - what would this suggest?

There may even be a third possibility to consider: what if dark matter or dark energy are shrinking - what would this suggest? 

[neil]

When you mentioned that "gravitational redshift isn't a thing", earlier, would that include photons from very distance sources that pass near large sequences of galaxies on their route to us?

No.  A photon does not change energy by the gravity it encounters on its trip.  Gravity is a conservative field.  Any energy gained from falling into a gravity well is lost by the same amount when coming out.

Gravitational redshift only occurs by the photon "originating" in a gravity well, and being observed in flatter space.  In that case, it is the time dilation within the gravity well (where the photon is created) compared to where it is observed that causes the shift.

I posed the following question to ChatGPT: "Is it possible for spacetime curvature to produce a redshift?"

Here's what it responded with (note - errors with copy/paste formatting fixed):

Yes, spacetime curvature can produce a redshift in the context of general relativity. This effect is known as gravitational redshift, and it arises due to the warping of spacetime caused by the presence of mass and gravity.

In the presence of a massive object, such as a star or a massive galaxy, spacetime is curved. When light travels through this curved spacetime, its path is altered, and the frequency of the light changes. As a result, the observed wavelength of the light is shifted, and this shift is toward the red end of the electromagnetic spectrum.

The gravitational redshift (z) can be quantified using the formula:

z = Δλ/λ0 = GM/(c²R)

where:

• z is the redshift,
  
• Δλ is the change in wavelength,
  
• λ0 is the initial (rest) wavelength of the light,
  
• G is the gravitational constant,
  
• M is the mass of the gravitating object,
  
• c is the speed of light, and
  
• R is the distance from the center of the massive object.
  

The greater the mass of the object and the closer the observer is to it, the larger the gravitational redshift. Gravitational redshift has been experimentally verified and is an essential aspect of general relativity. It has practical implications, such as in the study of the redshift of light from stars near massive objects, like black holes.

Thoughts?

[Angrboda]

Thoughts?

None.

[Deesse23]

Why are my red flags going off every time someone just throws something at the forum wall and ends with "thoughts"?

[arewethereyet]

Why are my red flags going off every time someone just throws something at the forum wall and ends with "thoughts"?

Because we have seen the pattern before....over and over again.

[neil]

Why are my red flags going off every time someone just throws something at the forum wall and ends with "thoughts"?

I said "Thoughts?" because I simply didn't want to write out a very long, boring, rambly-sounding question or series of questions which were open-ended anyways, but I'm curious about these red flags of yours - please tell me about them.

[arewethereyet]

Why are my red flags going off every time someone just throws something at the forum wall and ends with "thoughts"?

I said "Thoughts?" because I simply didn't want to write out a very long, boring, rambly-sounding question or series of questions which were open-ended anyways, but I'm curious about these red flags of yours - please tell me about them.

You started out long, boring, and rambly sounding.  Why not stay with that style?

[Thumpalumpacus]

I posed the following question to ChatGPT: "Is it possible for spacetime curvature to produce a redshift?"

Here's what it responded with (note - errors with copy/paste formatting fixed):

---

Yes, spacetime curvature can produce a redshift in the context of general relativity. This effect is known as gravitational redshift, and it arises due to the warping of spacetime caused by the presence of mass and gravity.

In the presence of a massive object, such as a star or a massive galaxy, spacetime is curved. When light travels through this curved spacetime, its path is altered, and the frequency of the light changes. As a result, the observed wavelength of the light is shifted, and this shift is toward the red end of the electromagnetic spectrum.

The gravitational redshift (z) can be quantified using the formula:

z = Δλ/λ0 = GM/(c²R)

where:

• z is the redshift,
  
• Δλ is the change in wavelength,
  
• λ0 is the initial (rest) wavelength of the light,
  
• G is the gravitational constant,
  
• M is the mass of the gravitating object,
  
• c is the speed of light, and
  
• R is the distance from the center of the massive object.
  

The greater the mass of the object and the closer the observer is to it, the larger the gravitational redshift. Gravitational redshift has been experimentally verified and is an essential aspect of general relativity. It has practical implications, such as in the study of the redshift of light from stars near massive objects, like black holes.

---

Thoughts?

I've seen AI get things miserably wrong. I don't trust it and you shouldn't either.