Does the bending of light by objects affect our view of the universe as a whole?

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Discussion Overview

The discussion centers around the effects of gravitational lensing on our perception of the universe. Participants explore how light bending caused by massive objects, such as the sun or galaxies, might influence the visibility and interpretation of distant stars and galaxies.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • tTs introduces the idea that massive objects affect the space around them, leading to light bending and potential visual distortions of celestial bodies.
  • One participant notes that while the bending of light by the sun is minimal, it becomes more significant near galaxies, resulting in observable lensing effects such as multiple images and distortions.
  • Another participant mentions ongoing research into gravitational lensing, highlighting its utility in studying mass distribution in the universe, including dark matter and galaxy masses.
  • Concerns are raised about whether the gravitational distortions significantly alter our view of the universe, with some suggesting that the differences are too small to be noticed without precise measurements.
  • Participants express curiosity about related topics and further reading on gravitational lensing and its implications.

Areas of Agreement / Disagreement

There is no clear consensus on the extent to which gravitational lensing affects our overall view of the universe, with some participants acknowledging its significance in scientific research while others question its perceptual impact.

Contextual Notes

The discussion reflects varying levels of understanding regarding the implications of gravitational lensing and the precision required to detect its effects. Some assumptions about visibility and measurement limitations are present but not fully explored.

Who May Find This Useful

Readers interested in astrophysics, gravitational lensing, and the study of mass distribution in the universe may find this discussion relevant.

n0vadeath
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tTs said that objects effect the space around them. Example is if we look near the sun and see a star(or planet) that really is blocked by sun, so the light bends around and we view it. Well how does this pertain all of the viewable space we see out there? I mean if I view one star or galaxy , then I view another star or galaxy near by, couldn't there be a chance the closer object might bend the light of the object futher out? How does that change the way we view the universe as a whole?


Peace
Damien
 
Astronomy news on Phys.org
The amount of bending by the sun is very small, so it is noticeable with very precise measurements. However, the same effect is more apparent when light passes close to a galaxy. Lensing effects take place and we can see multiple images and other distortions.
 
n0vadeath said:
tTs said that objects effect the space around them. Example is if we look near the sun and see a star(or planet) that really is blocked by sun, so the light bends around and we view it. Well how does this pertain all of the viewable space we see out there? I mean if I view one star or galaxy , then I view another star or galaxy near by, couldn't there be a chance the closer object might bend the light of the object futher out? How does that change the way we view the universe as a whole?

In fact, a lot of research is being devoted to answering just that question. As mathman has already suggested, the deviations are very small -- the sky wouldn't look any different to your eye if there were no gravitational distortions. However, we can detect the difference with our telescopes and it turns out to be a powerful tool for studying the distribution of mass in the universe. Gravitational lensing appears in many contexts, including studies of quasars, the cosmic microwave background, the large-scale distribution of matter, dark matter, galaxy and cluster masses, and even extrasolar planets.
 
Sweet,

Any related topics I can read on here ? Mabe a hot topic to look over?peace
Damien
 
Besides I haven't really thought about this question much till a few days ago. Been bugging me :P
 

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