Webb Falsified Dark Matter Prediction – And No One Cares

Sabine Hossenfelder
21 Nov 202406:36

Summary

TLDRThe James Webb Space Telescope has revealed galaxies forming much earlier and larger than dark matter models predicted, supporting the alternative theory of Modified Newtonian Dynamics (MOND). MOND, which alters gravitational forces to explain galaxy formation without dark matter, was predicted to match these findings since the 1990s. However, despite the compelling data, the scientific community continues to favor dark matter models, with the media overlooking MOND’s role. This raises important questions about scientific self-correction and how new evidence challenges established theories. The video concludes with a recommendation for viewers to explore Brilliant.org for deeper scientific learning.

Takeaways

  • 😀 The Webb telescope found evidence that challenges dark matter predictions and supports the modified Newtonian dynamics (MOND) theory.
  • 😀 Dark matter theory predicts galaxies should form slowly and gradually, but the Webb telescope has observed large galaxies much earlier than expected.
  • 😀 Modified Newtonian dynamics (MOND) proposes that gravity behaves differently at large distances or low accelerations, leading to faster galaxy formation.
  • 😀 The hypothesis of dark matter suggests galaxies should only be around 6 billion years old, but the Webb telescope has found older and larger galaxies.
  • 😀 MOND predicts faster galaxy formation due to stronger gravity in the early universe, which has been confirmed by recent Webb telescope data.
  • 😀 Despite the data supporting MOND, mainstream astrophysics has largely ignored the theory and continues to favor dark matter models.
  • 😀 New research based on Webb data shows that dark matter predictions do not fit the observed data, while MOND's predictions align closely with the observations.
  • 😀 A detailed comparison of Webb data and theoretical models highlights that dark matter models fail to account for the size and age of observed galaxies.
  • 😀 The debate between dark matter and MOND has reached a point where competing theories have been tested, with MOND providing a better match to the data.
  • 😀 The video highlights the media's tendency to ignore or underreport the success of MOND theory, focusing instead on dark matter despite the evidence against it.

Q & A

  • What surprising discovery did the James Webb Space Telescope (JWST) make regarding galaxies?

    -The JWST found evidence that contradicts predictions made by the dark matter hypothesis. It revealed that galaxies are forming much earlier and at larger sizes than what dark matter models predicted, supporting the competing theory of Modified Newtonian Dynamics (MOND).

  • How does the dark matter hypothesis explain galaxy formation?

    -The dark matter hypothesis suggests that galaxies form gradually over time through the merging of smaller galaxies. This process is slow, with galaxies merging and growing in size over billions of years.

  • What does Modified Newtonian Dynamics (MOND) propose about gravity and galaxy formation?

    -MOND proposes that gravity works differently at low accelerations than Einstein's predictions, with a weaker fall-off at large distances. This leads to faster galaxy formation, as gravity has a stronger effect on early galaxies, allowing them to form more quickly.

  • Why are astrophysicists skeptical of MOND despite its alignment with Webb's findings?

    -Astrophysicists are generally skeptical of MOND because it challenges Einstein's theory of gravity, which has been widely accepted. The preference for dark matter models persists, and scientists tend to adjust dark matter theories to fit new data rather than fully accepting MOND.

  • How did astrophysicists initially react to the findings from the Webb telescope?

    -Astrophysicists initially questioned the new data, suggesting it might be inaccurate. When this didn't work, they started attempting to modify dark matter models to align with the new observations, rather than considering MOND as a viable explanation.

  • What is the significance of the comparison between the two predictions for galaxy formation?

    -The comparison shows that the predictions from dark matter models do not match the observed data from the Webb telescope, while MOND’s predictions align more closely with the observed galaxy sizes and ages. This highlights the strength of MOND in explaining the data.

  • How does the popular science media handle the Webb telescope's findings?

    -The popular science media often overlooks or downplays the fact that the findings from the Webb telescope support MOND. The speaker compares this omission to a review of *The Empire Strikes Back* that doesn’t mention Darth Vader, suggesting that crucial details are being ignored.

  • What metaphor does the speaker use to describe galaxy formation under dark matter theory?

    -The speaker compares galaxy formation under dark matter theory to dirt accumulating under a sofa over billions of years. The dirt represents smaller galaxies merging to form larger ones, much like how galaxies are thought to gradually build up through mergers.

  • Why is the speaker skeptical about the idea that science self-corrects?

    -The speaker is skeptical because, in this case, even when data clearly contradicts dark matter theory, scientists and the media fail to fully embrace the alternative theory of MOND. This suggests that the process of science self-correcting is often slower and more resistant to change than it may appear.

  • What role does Brilliant.org play in the video?

    -Brilliant.org is promoted as a tool for learning science, with interactive visualizations and follow-up questions that help users understand complex topics. The speaker encourages viewers to try Brilliant to better grasp the science discussed in the video and other related subjects.

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Related Tags
Webb TelescopeDark MatterMOND TheoryGalaxy FormationAstrophysicsSpace ScienceCosmology DebateAstronomy DiscoveryScientific DiscoverySpace ExplorationNew Theories