How do we know the stars are not our own light falling back.

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Discussion Overview

The discussion revolves around the question of whether the stars observed in the night sky could be the result of light from our own solar system reflecting back to us, rather than originating from distant stars or galaxies. Participants explore various theoretical scenarios regarding the nature of light, gravity, and the structure of the universe.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question how we can be sure that the light from stars is not simply light from our own solar system that has taken a long time to return.
  • There are inquiries about the feasibility of light "falling back" and how this could explain the observation of millions of distinct galaxies and their specific redshifts.
  • One participant suggests that we might be moving through a universe that is collapsing, proposing that light could be reflected back to us from the shell of the universe or due to gravitational lensing.
  • Another participant speculates on the effects of gravity on light, suggesting that photons could be bent back towards their point of origin, potentially creating a scenario where light appears to come from ahead of us as we travel through space.
  • Concerns are raised about how a reflective boundary in the universe could affect the appearance of light sources, leading to different observational outcomes.
  • One participant asserts that the electromagnetic waves we receive cannot originate from ourselves, implying a rejection of the initial hypothesis.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of light from our solar system being observed as stars. While some explore theoretical scenarios supporting this idea, others firmly reject it, leading to an unresolved debate.

Contextual Notes

Participants mention various phenomena such as gravitational effects on light and the implications of redshift, but these discussions remain speculative and do not reach a consensus on the underlying mechanisms.

Colm
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How do we know that the stars we see, or some of them are not the light from our own system falling back, and that we may be looking at light from our own star/solar system/ galaxy that has taken millions of years to fall back on its point of origin?
 
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Colm said:
How do we know that the stars we see, or some of them are not the light from our own system falling back, and that we may be looking at light from our own star/solar system/ galaxy that has taken millions of years to fall back on its point of origin?
Why do you think it is possible for light to "fall back"? How would this result in our seeing MILLIONS of distinct galaxies? How would it account for the specific red shifts of distant galaxies? I could go on and on but it's pointless. The answers are many-fold.
 
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We could be falling through a universe rather than moving "up and out" through it, the shell of this universe could be collapsing and the reflected points are where light is reflected from, our could be a focal point due to lensing. Light, which is also a particle, and can not escape a black hole, would first rise "up" from our point, (constantly moving) and eventually get drawn back in the same direction we are headed
 
Of course this is probably not the case, but for the interest of the point of view, at x magnitude of gravity, in a fixed point how far could a photon travel before being bent back to its point of origin. Perhaps also to not think of it like a ball going up and down, gravity could bend that light around in a circle, so even if the point of origin moved through space, the gravity could be bending light back around and in the direction of our observation point, so would appear to be ahead of us in the direction we are traveling through the universe.. Also to explain the millions of point sources (stars and galaxies).. the light would only come back as a diffuse glow if a reflective boundary was uniform, if there was a boundary to the universal bubble that was pointed like a tesseract, the observation would be different, with light being focused at points.
 
phinds said:
How would it account for the specific red shifts of distant galaxies? I could go on and on but it's pointless. The answers are many-fold.
Yes, and my first thought has been the line spectra of the stars we observe, or the radio emissions, or gamma emissions or, or, or. As @phinds has said: the answers are many-fold.

There is simply no way that the electromagnetic waves we receive are originated by ourselves.

The question has been answered and a further discussion makes no sense.
Thread closed.
 

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