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en.wikipedia.org/wiki/Galaxy_rotation_curve

The rotation curve of a disc galaxy is a plot of the orbital speeds of visible stars or gas in that ... Though dark matter is by far the most accepted explanation of the rotation problem, ... within the galaxy or to modified dynamics in the outer portions of the spiral and not to ..... Groups and clusters · Large quasar groups · Quasars.

faculty.fortlewis.edu/hakes_c/Phys_145/test_4_practice_questions.html

D) The larger the gravity lens, the more massive the galaxy cluster. ..... 5) Based on galactic rotation curves and cluster dynamics, we think dark matter:.

www.flashcardmachine.com/astronomy126.html

Apr 6, 2017 ... all the normal matter and dark matter ... Based on galactic rotation curves and cluster dynamics, we think dark matter ...

pages.astronomy.ua.edu/keel/galaxies/darkmatter.html

The basic conclusion comes from galaxy rotation curves, mass distributions inferred ... The amount of dark matter is often given in relation to luminous material through the ... while the dynamical values for elliptical galaxies and clusters reach hundreds. ... Rotation curves: As discussed in the disk-dynamics section, real disk ...

medium.com/starts-with-a-bang/five-reasons-we-think-dark-matter-exists-a122bd606ba8

Aug 19, 2014 ... Here are five of the most compelling reasons we think* dark matter exists: ... From standard Newtonian dynamics, we expect the velocity of stars to ... the edges of the luminous matter, the observed galactic rotation curves could be explained. ... This cluster is actually two galaxy clusters which have recently ...

physicsworld.com/cws/article/news/2016/oct/07/correlation-between-galaxy-rotation-and-visible-matter-puzzles-astronomers

Oct 7, 2016 ... Strange correlation: why is galaxy rotation defined by visible mass? ... dark matter like superfluid dark matter or even complex galactic dynamics could .... Bullet cluster characteristics and therefore I don't think it makes MOND any more ..... What if the galactic rotation curves of spiral galaxies, the spiral arms, ...

phys.org/news/2016-09-spiral-irregular-galaxies-current-dark.html

Sep 21, 2016 ... "Galaxy rotation curves have traditionally been explained via an ad ... "In our case, we find a relation between what you see in normal matter in ... the hypothesis of Modified Newtonian Dynamics proposed by Israeli physicist Moti Milgrom. But it could also be something in the nature of dark matter like the ...

phys.org/news/2015-04-dark-conspiracy.html

Apr 30, 2015 ... Since this discovery 40 years ago, we have learned this mysterious ... Computer simulation of a galaxy, with the dark matter colorized to make it visible. ... experts in dark matter and galaxy formation to think carefully about what has ... the galaxy : Team develops new classification system for galaxies based ...

phys.org/news/2015-03-galaxy-clusters-collidedark-mystery.html

Mar 26, 2015 ... When galaxy clusters collide, their dark matters pass through each other, with ... " If it did, we would expect to see them 'bounce' off each other".

www.universetoday.com/91520/astronomy-without-a-telescope-could-dark-matter-not-matter

Currently, these galactic rotation curves represent key evidence for the existence ... So we conclude that the rest of that galactic mass must be dark (invisible) matter. ...... explain spiral galaxy rotation curves fan club, but still think the lensing /cluster .... This “101 model” of dark matter then says the motion is the dynamics of a ...