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News and Views
Nature 427, 299-300 (22 January 2004) | doi:10.1038/427299a
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Academic Neuropathologist
- University Hospitals Case Medical Center
- Cleveland, Ohio, USA
Assistant / Associate Professor
- University of South Dakota - Biomedical Engineering
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Astronomy: A problem of distance
Bohdan Paczynski1
Abstract
How far is the Pleiades star cluster from Earth? The latest measurement suggests that there is a problem with data from the Hipparcos satellite, which will have repercussions for estimating other astronomical distances.
The European Space Agency's satellite Hipparcos1 has enjoyed a successful astrometric mission, measuring the distances and motions of more than 100,000 nearby stars. But its measurement of the distance to the well-known star cluster the Pleiades (or Seven Sisters; Fig. 1
- Bohdan Paczynski is in the Department of Astrophysics, Princeton University, Princeton, New Jersey 08544-1001, USA.
Email: bp@astro.princeton.edu
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