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News Release Archive:

News Release 117 of 297

August 21, 2006 01:00 PM (EDT)

News Release Number: STScI-2006-39

NASA Finds Direct Proof of Dark Matter

Technical facts about this news release:

About the Object
Object Name: 1E0657-556, 1ES 0657-55.8
Object Description: Cluster of Galaxies
Position (J2000): R.A. 06h 58m 27s.40
Dec. -55° 56' 47 ".0
Constellation: Carina
Distance: 3.4 billion light years (1 billion parsecs)
About the Data
Data Description: This image was is a compilation of data from the Chandra X-ray Observatory, Hubble Space Telescope, and the Magellean telescope at Las Campanas Observatory. The HST component was created from data from proposal 10200: C. Jones and W. Forman (Harvard-Smithsonian Center for Astrophysics), A. Gonzalez (University of Florida), D. Clowe (Steward Observatory, University of Arizona), M. Markevitch (Harvard-Smithsonian Center for Astrophysics).

The science team comprises D. Clowe (Steward Observatory, University of Arizona), Marusa Bradac (Kavli Institute for Particle Astrophysics and Cosmology, Stanford), A. Gonzalez (University of Florida), M. Markevitch, S. Randall, and C. Jones (Harvard-Smithsonian Center for Astrophysics), and D. Zaritsky (Steward Observatory, University of Arizona)

Instrument: HST: ACS/WFC
Exposure Date(s): October 21, 2004
Exposure Time: 4.7 days
Filters: F435W(B), F606W(V) and F814W(I)
About the Image
Image Credit: X-ray: NASA/CXC/M.Markevitch et al.
Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.
Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/D.Clowe et al.
Release Date: August 21, 2006