NASA to Announce New Findings on Dark Energy

Astronomers will hold a media teleconference Tuesday, Dec. 16 at 1 p.m. EST to announce important new results on dark energy that were made using NASA's Chandra X-ray Observatory.

The briefing participants are:
-- Alexey Vikhlinin, astrophysicist, Smithsonian Astrophysical Observatory, Cambridge, Mass.
-- William Forman, astrophysicist, Smithsonian Astrophysical Observatory
-- David Spergel, theoretical astrophysicist, Princeton University

To participate in the teleconference, reporters must contact the Chandra press office at 617-496-7998 or via e-mail at before noon on Tuesday, Dec. 16, for dial-in information.

A video file about the discovery will air on NASA Television on Dec. 16. The teleconference audio will be streamed live on the Web at:

For information about NASA and agency programs, visit:

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