Hubble Sheds Light on Small-Scale Concentrations of Dark Matter

This video begins with an image from the NASA/ESA Hubble Space Telescope of the massive galaxy cluster MACSJ 1206. Embedded within the cluster are the distorted images of distant background galaxies, seen as arcs and smeared features. These distortions are caused by the dark matter in the cluster, whose gravity bends and magnifies the light from faraway galaxies, an effect called gravitational lensing. This phenomenon allows astronomers to study remote galaxies that would otherwise be too faint to see. 

The video then shows an artist’s impression of small-scale concentrations of dark matter (represented in this video in blue). Dark matter is the invisible glue that keeps stars bound together inside a galaxy and makes up the bulk of the matter in the Universe. These blue halos reflect how the galaxy cluster’s dark matter is distributed, revealed by new results from the Hubble Space Telescope. This was accomplished by a team of astronomers by measuring the amount of gravitational lensing.

Credit:
NASA, ESA, G. Caminha (University of Groningen), M. Meneghetti  (Observatory of Astrophysics and Space Science of Bologna), P. Natarajan (Yale University), the CLASH team, and M. Kornmesser (ESA/Hubble)

[adriang.cornejo]

Dears. As reference, the paper where is described a solution of the rotational velocities observed in spiral galaxies, without using dark matter (but adding the Coriolis force in the rotating system, from the General Theory of Relativity), is the following (from 2020):

[mariadaluzmoutinho]

O Hubble deu à luz pequena escala concentrada da matéria escura!! Que contraste entre a energia luz e a matéria escuridão, dualidades existentes no Universo!?

[kayakingforthebirds]

Perhaps the reason they haven't "seen" dark matter is that they are looking at it wrong. So far we have been limited to looking only at the three dimensions of the universe that we occupy. Consider the possibility that there is matter that also exists in three dimensions, but only one or two of those dimensions are the same as our three. We would sense that "something is there" but not be able to see it.