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@_different_username@lemmy.world
- Comment on vibes-based astrophysics 1 week ago:
Did the SA article come out before or after the article above? Because the JWST has been creating problems for lambda CDM. Take, for example, this Quanta Magazine article. The purport of the article is that, even though the data from the JWST seems to contradict ΛCDM, it really doesn’t, if we just apply post-hoc modifications.
Why are the galaxies so bright at very high red shifts? Oh, the initial mass function was higher. Or it was super efficient star formation. Or the density of dark matter was higher in the early universe. Or the density of dark energy was higher, so the universe actually wasn’t that young after all. Or a linear combination of these things, and maybe a few others, that we can fit to the data. You don’t reconsider old theories in the light of new data, just apply more terms so that the old theory matches the new data.
For me, if the data starts to deviate from my model, it probably means that I need a different model
- Comment on vibes-based astrophysics 1 week ago:
To which McGaugh et al. had this delicious reply:
One does not simply turn all the available baryons into stars.
- Comment on vibes-based astrophysics 1 week ago:
You might consider reading Accelerated Structure Formation: The Early Emergence of Massive Galaxies and Clusters of Galaxies. The paper is absolutely wonderful. The main thesis of the paper is, “Wow, the James Webb Telescope sure has been finding some remarkably mature galaxies for the early universe. Maybe we should consider the possibility that the models we use to predict galaxy formation, specifically lambda CDM, are incorrect and Non-Physical.”
The author states the difficulty in the conclusion:
Despite the predictive successes of MOND, we do not yet know how to construct a cosmology based on it. In contrast, ΛCDM provides a good fit to a wide range of cosmological observables but does not provide a satisfactory explanation of the many phenomena that were predicted by MOND, nor is it clear that it can do so. We find ourselves caught between two very different theories that seem irreconcilable despite applying to closely related yet incommensurate lines of evidence.
The complaints about the early maturation of galaxies seen by the JWST was widely reported. My favorite line from that article:
“Maybe in the early universe, galaxies were better at turning gas into stars,” Chworowsky said.
Sure, it’s not that our theories of cosmology are incorrect; things like star formation were just different back in the early universe. I guess you just had to be there.
- Comment on me irl 6 months ago:
Because crystallography and solid state chemistry is the foundation of every modern convenience?
But it’s also beautiful. If they’ve never heard of Bravais-Friedel-Donnay-Harker, then you can’t really blame them for not knowing.
- Comment on Efficency 6 months ago:
HCP FTW.
- Comment on Neil deGrasse Tyson reads his peer review of Terrence Howard's mathematics theories 6 months ago:
Same here. I’ve come to the conclusion that, if I was unwilling to accept anyone that wasn’t of the calibre of Carl Sagan to fill his shoes, I was probably going to wait a long time. I think Degrasse Tyson’s advocacy for black scientists is admirable, as is his willingness to promote religious reconciliation. These weren’t areas of focus for Sagan, but that’s ok. They can be different people, even imperfect people, and maybe that’s good.
- Comment on what has worked for you to stop getting angry thinking about people who hurt you? 1 year ago:
I’d encourage you to think about these events as you would a physical injury. A physical injury can hurt for a long time and no amount of recognition or “processing” or “getting over it” can short-cut the all-too-slow healing that needs to take place. It’s no fun and there’s no way to just make it go away.
That said, you can do things that care for the injury while it is healing. I don’t know what these are for you, but for me, I needed to recognize that the people I was angry at were also instrumental in helping me advance.
For example, I had a string of terrible jobs with bad bosses, but that string of terrible jobs led me to someplace that I am very happy to work. Once I realized this, it started getting easier to recognize both that the way I was treated was wrong and that I was also glad that these people were essential to me get to where I am. Even so, it was a long process and physically painful. My anger towards these people did nothing to hurt them, but it was terrible on my health.
I’m sorry you had to experience these things, but I hope they eventually lead you to someplace better.
