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Science 22 December 1995:
Vol. 270. no. 5244, pp. 1942 - 1943
DOI: 10.1126/science.270.5244.1942
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Perspectives

Sidney van den Bergh

The Hubble parameter is a measure of the size-scale and age of the universe, and its value has been a topic of intense debate. In his Perspective, van den Bergh reviews recent results obtained from observations of galaxy clusters and comments on the sources of the differing values.

The author is at the Dominion Astrophysical Observatory, National Research Council of Canada, Victoria, British Columbia, V8X 4M6, Canada. E-mail: vandenbergh@dao.nrc.ca




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Science. ISSN 0036-8075 (print), 1095-9203 (online)