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Volume 155, Number 25 (June 19, 1999)

References & Sources
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Galaxy study challenges cosmic-age estimateFull Text

The cosmos may be several billion years younger than the age astronomers recently reported, according to a direct measurement of the distance to a nearby galaxy.

References:

Herrnstein, J.R. 1999. VLBA observations of the masers in NGC 4258: A unique window into the sub-parsec-scale world of an active galactic nucleus. Meeting of the American Astronomical Society. June. Chicago.

Further Readings:

Cowen, R. 1999. Hubble telescope dates the universe. Science News 155(May 29):340.

Sources:

Wendy L. Freedman
Carnegie Observatories
813 Santa Barbara Street
Pasadena, CA 91101-1292

James R. Herrnstein
National Radio Astronomy Observatory
New Mexico Array Operations Center
P.O. Box 0
1003 Lopezville Road
Socorro, NM 87801

From Science News, Vol. 155, No. 25, June 19, 1999, p. 391. Copyright © 1999, Science Service.

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