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Title: The Dark Side of the Universe

One of the greatest accomplishments in recent astrophysics is the creation of a model for the complete inventory of the Universe. All the observational data tells us with extremely high certainty thatmore » ordinary matter (every particle ever detected by every person who ever lived) makes up only one fifth of all the matter there is. The rest goes by the popular name of dark matter. Because it is dark, dark matter has been notoriously hard to detect; it doesn't emit or reflect radiation such as light or heat, and it can have only the feeblest of interactions with itself and ordinary matter. So how do we know it is there? In this talk, I will discuss how astronomers observe the invisible matter in one of the true gems on the sky: a giant cluster of galaxies.« less
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Title: The Dark Side of the Universe
Authors:
Publication Date: 2007-08-28
OSTI Identifier: 1014049
DOE Contract Number: AC02-76SF00515
Other Number(s): TRN: US1105387
Resource Type: Multimedia
Resource Relation: Conference: SLAC Public Lecture Series, SLAC National Accelerator Laboratory, Menlo Park, California, presented on August 28, 2007
Research Org: SLAC (SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States))
Sponsoring Org: USDOE Office of Science (SC)
Subject: 43 PARTICLE ACCELERATORS ; ASTROPHYSICS ; FERMILAB ACCELERATOR ; GALAXIES ; NONLUMINOUS MATTER ; RADIATIONS ; SKY ; STANFORD LINEAR ACCELERATOR CENTER ; UNIVERSE
Country of Publication: United States
Language: English
Run Time: 0:58:47
System Entry Date: 2016-01-27