Quote:
Originally Posted by freebeard
What do you make of this?
The absence of Dark matter is predicated on the galaxies not rotating as fast as they should. |
A few comments:
1) cosmologists, and some of their models of the Universe, represent spatial distribution of mass to be homogeneous in very large scale, while at the same time, heterogeneous on more regional distance scales. Even on a galactic scale, a perceived absence of dark matter would not violate the mathematics.
2) Something particular to the video is the fact that, observations were limited to only the visible light spectrum.
3) Cosmological astronomy uses all-spectrum spectroscopy, from infrared photons, through gamma-ray photons.
4) Carbon stars produce a range of carbon wind products including carbon, graphite, polycyclic aromatic hydrocarbons, and diamonds, all exposed to all manner of steller photons, plus ions from compressive shockwaves of nearby novae and supernovae.
5) Some carbon is opaque, and has high absorption rates and heating coefficients, producing an infrared signature which can be measured from the Hubble and other observatories.
6) Some carbon, is extremely small and translucent, and it absorbs no photons, does not have any infrared signature or any other kind of signature. It is chemically inert. It survives intersteller extinction. It would not be visible to an optical, visible- wavelength photographic film or cryogenically-cooled charged-couple device at the focus of a telescope, other than occluding the view of images behind it.
7) These invisible diamonds, themselves, constitute 'missing mass'.
8) And scientists attempting to analyze diamond from chondrite meteors and comets in a laboratory setting can contaminate the findings if they're not extremely careful about how they expose the extant diamond during the test process.
9) Presently, some cosmologists are attempting new models of the Universe which place dark matter in space before the creation of galaxies, predating all accretion discs which formed all galactic and planetary systems.
Very little is known.
