Dark matter - Wikipedia, the free encyclopedia
In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. Accordi...
en.wikipedia.org/wiki/Dark_matter
Evidence for Dark Matter; Dark matter in galaxies and clusters: various techniques; ... If WIMPs really exist, and make up most of the dark matter in galaxies, which of the following is not one of their characteristics? a. They travel at speeds close to the speed of light. b. They are subatomic particles.
www.phy.duke.edu/courses/055/syllabus/lecture25.pdf
Quantitative comparison, however, to the simulation reveals the following points: ... Dark matter is material that gravitates but does not emit very much light. ... The Solar System: Until Voyager II revised the mass estimate of Neptune by 15% there was evidence for unseen matter in the solar system. Now, all the matter can...
zebu.uoregon.edu/1997/ph410/l8.html
23. Which of the following have NOT provided astronomers with evidence for dark matter in the Universe? a) measurements of rotation curves of spiral galaxies. b) measurements of the temperature of hot gas in galaxy clusters.
www.etsu.edu/physics/bsmith/spring02/hw+q+s/practice_qu... www.etsu.edu/physics/bsmith/spring02/hw+q+s/practice_quiz5.html
Which of the following is not a piece of evidence supporting the conclusion that active galactic nuclei are powered by accretion disks around massive black holes? ... Question 9; What evidence suggests that the Milky Way contains dark matter?
www.shari.com/2002/04/phys_1412_quiz__1.html
2)  What evidence suggests that the Milky Way contains dark matter? ... 7)  Which of the following is not evidence for dark matter? ... A) There are not enough neutrinos to make up all the dark matter.
www.physics.sfsu.edu/~cvanajak/HW_Dark%20Matter_FateOfU... www.physics.sfsu.edu/~cvanajak/HW_Dark%20Matter_FateOfUniv.html
The Dark Matter Universe ... While Cancer is an extreme case, most all clusters do show some evidence of substructure. Hence, the measured velocity dispersion in these cases does not apply to one dynamical system but to, perhaps, several. ... Hence we are driven to the following inescapable conclusion:
zebu.uoregon.edu/1997/ph410/l10.html
Since it cannot be seen by telescopes, the nature and distribution of dark matter have puzzled astronomers for decades. ... Hubble Finds Evidence For Dark Energy In The Young Universe (Nov. 16, 2006) — Scientists using NASA's Hubble Space Telescope have discovered that dark energy is not a new constituent of space,
www.sciencedaily.com/releases/2000/05/000511084854.htm
Previous studies with Hubble and NASA’s Chandra X-ray Observatory found evidence of dark matter in entire clusters of galaxies such as the Bullet Cluster. The new Hubble observations continue ... Dark Matter Of The Universe Has A Long Lifetime (Oct. 4, 2007) — The universe consists not just of visible celestial bodies,
www.sciencedaily.com/releases/2009/03/090312093947.htm
Neal Weiner (with Nima Arkani-Hamed) was the author of the model that appeared right after the CDF multi-muons excess with a convienient theoretical model that would have explained their “new physics”. Not saying that this is the same, but ...
http://blogs.discovermagazine.com/cosmicvariance/2009/1...