Dolores Beasley
Headquarters, Washington, D                    September 7, 2000
(Phone: 202/358-1753)

Steve Roy
Marshall Space Flight Center, Huntsville, AL
(Phone: 256/544-6535)

Dr. Wallace Tucker
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA
(Phone: 617/496-7998)

NOTE TO EDITORS: N00-41

CHANDRA CLINCHES CASE FOR "MISSING LINK" BLACK HOLE: 
SPACE SCIENCE UPDATE SEPT. 12

Until now, scientists have observed only two types of black 
holes -- some about the mass of stars and some with a mass a 
million to a billion times the mass of a star. At 1 p.m. EDT 
Sept. 12 in the James E. Webb Auditorium at NASA Headquarters, 
300 E St., SW, Washington, DC, a Space Science Update panel will 
present evidence for a new type of black hole. The recent 
evidence comes from NASA's Chandra X-ray Observatory.

The Space Science Update panelists will be:
- Dr. Donald A. Kniffen, Chandra X-ray Observatory Deputy 
  Program Scientist, NASA Headquarters
- Dr. Martin Ward, Professor of Astronomy and Director of the 
  X-ray Astronomy Group, University of Leicester, UK
- Dr. Andrea Preswich, Astrophysicist, Harvard-Smithsonian
  Center for Astrophysics, Cambridge, MA
- Dr. Philip Kaaret, Astrophysicist, Harvard-Smithsonian Center 
  for Astrophysics 
- Dr. Douglas Richstone, Professor and Chair of Astronomy, 
  University of Michigan, Ann Arbor

The Space Science Update will be carried live on NASA Television 
with two-way question-and-answer capability for reporters 
covering the briefing from participating NASA centers. NASA 
Television is broadcast on satellite GE-2, transponder 9C, at 85 
degrees West longitude, vertical polarization, frequency 3880 
MHz, audio of 6.8 MHz. The briefing also will be Webcast live 
via links at: 

             http://www.nasa.gov/ntv/ntvweb.html

                          -end-