1. Press Conference #2: "Chandra Probes the Nature of Dark Matter" (EMSS 1358+6245, Abell 2390 & MS2137.3-2353s)
Panelists: Steven Allen (Institute of Astronomy, UK), John Arabadjis, (MIT), Joel Bregman (University of Michigan)
September 5, 2001 (Photo: CXC)

2. Press Conference #2
Steve Allen presents his group's findings on the amount of dark matter in the Universe determined from Chandra studies of galaxy clusters.
September 5, 2001 (Photo: CXC)

3. Press Conference #2
Steve Allen presents his group's findings on the amount of dark matter in the Universe determined from Chandra studies of galaxy clusters.
September 5, 2001 (Photo: CXC)

4. Press Conference #2
John Arabadjis describes his observations of the galaxy cluster EMS 1358+6245 and how they constrain the size of dark matter particles.
September 5, 2001 (Photo: CXC)

5. Press Conference #2
John Arabadjis describes his observations of the galaxy cluster EMS 1358+6245 and how they constrain the size of dark matter particles.
September 5, 2001 (Photo: CXC)

6. Press Conference #2
John Arabadjis describes his observations of the galaxy cluster EMS 1358+6245 and how they constrain the size of dark matter particles.
September 5, 2001 (Photo: CXC)

7. Press Conference #2
As the independent commentator, Joel Bregman puts the results of both groups into context for the members of the media.
September 5, 2001 (Photo: CXC)