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VERSION:2.0
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PRODID:-//Virginia Tech//VT Calendar//EN
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DTSTAMP:20120224T003000Z
UID:1315839175038@events.msu.edu
CATEGORIES:Public Programs
DTSTART:20120224T003000Z
DTEND:20120224T023000Z
SUMMARY:Through a Lens Darkly:  Testing Dark Matter with the Hubble Space Telescope
DESCRIPTION:
 Professor Megan Donahue describes her show:  Dark 
 matter, matter that seems to have a gravitational 
 pull, but which we cannot see directly, 
 remains one of the greatest puzzles in our 
 understanding of the universe.  Gravitational 
 lensing, the bending of light by mass, is 
 one of the ways in which we can detect this mysterious 
 matter.  I will describe an on-going, 
 multi-year program by MSU astronomers, collaborating 
 with astronomers from the Space Telescope 
 Science Institute and around the world, 
 to provide the world's best measurements of 
 dark matter in a sample of 25 extremely massive 
 clusters of galaxies.  We use the Hubble 
 space Telescope to provide full-color images 
 of the gravitational lensing of galaxies behind 
 these clusters.  We use other telescopes, 
 including the Chandra X-ray Observatory and 
 radio telescopes, to provide independent measurements 
 of the dark matter.  With these observations, 
 we will test theoretical predictions 
 about where and how dark matter and normal 
 matter pile up in the universe.\n\n
 Price: free\n
 Sponsor: Abrams Planetarium\n
 Sponsor's Homepage: http://www.pa.msu.edu/abrams\n
 Contact name: Mary Gowans\n
 Contact phone: 517-355-4676\n
 Contact email: gowans@msu.edu\n
 for more info visit the web at:\n 
 http://www.pa.msu.edu/abrams\n
LOCATION:Abrams Planetarium
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