James Webb Space Telescope Finds Evidence for Alternate Theory of Gravity
Astronomers using the James Webb Space Telescope found evidence supporting Modified Newtonian Dynamics, challenging the Cold Dark Matter model of galaxy formation, which remains favored despite these findings.
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Astronomers utilizing the James Webb Space Telescope (JWST) have discovered evidence that may support an alternative theory of gravity known as Modified Newtonian Dynamics (MOND), challenging the widely accepted Cold Dark Matter (Lambda-CDM) model. Traditionally, Lambda-CDM posits that dark matter is essential for galaxy formation, predicting that early galaxies should be small and dim due to the gradual accumulation of matter through dark matter's gravitational influence. However, recent observations from JWST indicate that ancient galaxies appear bright and fully formed, contradicting these predictions. Researchers from Case Western Reserve University argue that the data aligns more closely with MOND, which suggests that galaxies formed rapidly without the need for dark matter. While MOND has faced criticism and remains contentious, it offers a different perspective on galaxy formation by modifying Newton's laws to explain observed phenomena without invoking dark matter. Despite the support for MOND from JWST findings, the Lambda-CDM model continues to be favored in the astrophysical community due to its historical predictive success and compatibility with General Relativity. The ongoing debate highlights the complexities of understanding the universe's structure and the need for further exploration of both theories.
- JWST observations challenge the Cold Dark Matter model of galaxy formation.
- Evidence suggests galaxies formed rapidly, supporting the Modified Newtonian Dynamics theory.
- MOND modifies Newton's laws to explain galaxy behavior without dark matter.
- Lambda-CDM remains widely supported despite challenges from MOND.
- The debate underscores the complexities in astrophysics and the need for further research.
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- Many commenters express skepticism about the validity of MOND, citing its limitations compared to general relativity and the Cold Dark Matter model.
- There is a consensus that the evidence presented is not definitive, with some calling the article's claims misleading or sensationalized.
- Several participants highlight the need for further research and discussion on the implications of the new data for both MOND and dark matter theories.
- Some commenters advocate for a more nuanced understanding of galaxy formation, suggesting that current models may still accommodate the new observations.
- Concerns are raised about the portrayal of scientific debates in media, emphasizing the importance of accurate and precise communication.
16 commentsAnother comment linked to https://tritonstation.com/new-blog-page/, which is an excellent read. It makes the case that GR has never been tested at low accelerations, that is might be wrong. But we know for a fact MOND is wrong at high accelerations. Unless your theory can cover both, I don't see how it can be pitched as an improvement to GR.
Edit: this sounds a bit hostile. to be clear, I think modified gravity is absolutely worth researching. but it isn't a silver bullet
His arguments are very convincing and relatively clear. I am not an astrophysicist but I have two degrees in physics and have always found the dark matter theory to be lacking -- in absence of any evidence of causation whatsoever, dark matter can only be described trivially as "where we would put matter if we could to make our theory of gravity make sense," which is totally backwards from a basic scientific perspective.
Predictions based on modern MOND postulates are shown to be more and more accurate as our observational instruments continue to improve in sensitivity.
At the very least the term Modified Gravity or MOG should be used instead of MOND to avoid a lot of pointless back and forth about MOND.
https://www.preposterousuniverse.com/blog/2011/02/26/dark-ma...
I find this treatment more compelling.
Anyway, a bit clueless about this, just curious what gravitons are supposed to mean for either theory (MOND, LCDM, etc.).
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