I love how things are invented because explanations for things like not enough mass to make a galaxy spin like that.
Dark Matter Dark Energy etc is like frog dna in Jurassic park. It won’t work without it so let’s stuff something in to fudge it.
“I love how things are invented because explanations for things like not enough mass to make a galaxy spin like that.”
Neptune and Pluto were “invented” before they were discovered.
wiki
Gravitational lensing
One of the consequences of general relativity is massive objects (such as a cluster of galaxies) lying between a more distant source (such as a quasar) and an observer should act as a lens to bend light from this source. The more massive an object, the more lensing is observed.
Strong lensing is the observed distortion of background galaxies into arcs when their light passes through such a gravitational lens. It has been observed around many distant clusters including Abell 1689.[66] By measuring the distortion geometry, the mass of the intervening cluster can be obtained. In the dozens of cases where this has been done, the mass-to-light ratios obtained correspond to the dynamical dark matter measurements of clusters.[67] Lensing can lead to multiple copies of an image. By analyzing the distribution of multiple image copies, scientists have been able to deduce and map the distribution of dark matter around the MACS J0416.1-2403 galaxy cluster.[68][69]
Weak gravitational lensing investigates minute distortions of galaxies, using statistical analyses from vast galaxy surveys. By examining the apparent shear deformation of the adjacent background galaxies, the mean distribution of dark matter can be characterized. The mass-to-light ratios correspond to dark matter densities predicted by other large-scale structure measurements.[70] Dark matter does not bend light itself; mass (in this case the mass of the dark matter) bends spacetime. Light follows the curvature of spacetime, resulting in the lensing effect.[71][72]
In May 2021, a new detailed dark matter map was revealed by the Dark Energy Survey Collaboration.[73] In addition, the map revealed previously undiscovered filamentary structures connecting galaxies, by using a machine learning method.[74]
An April 2023 study in Nature Astronomy examined the inferred distribution of the dark matter responsible for the lensing of the elliptical galaxy HS 0810+2554, and found tentative evidence of interference patterns within the dark matter. The observation of interference patterns is incompatible with WIMPs, but would be compatible with simulations involving 10−22 eV axions. While acknowledging the need to corroborate the findings by examining other astrophysical lenses, the authors argued that “The ability of (axion-based dark matter) to resolve lensing anomalies even in demanding cases such as HS 0810+2554, together with its success in reproducing other astrophysical observations, tilt the balance toward new physics invoking axions.”[12][75]
“Dark Matter Dark Energy etc is like frog dna in Jurassic park. It won’t work without it so let’s stuff something in to fudge it.”
invisible and undetectable shite has always been the refuge of fools in the world of physics, with recent examples being phlogiston as an “explanation” for fire and other oxidation reactions and “the ether” as an “explanation” as to how light propagates ...