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News and Views
Nature 433, 465-466 (3 February 2005) | doi:10.1038/433465a; Published online 2 February 2005
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Research Assistant Professor, Post-Doctoral Fellow, Statistical Genetic Analyst, and Scientific Programmer Positions in Statistical Human Genetics
- University of Michigan
- Ann Arbor, Michigan, USA
Laboratory Technician (Pharmaceutics)
- Alliance Institute of Advanced Pharmacy and Health Sciences
- Hyderabad 500038 India
Astronomy: Hot pursuit of missing matter
J. Michael Shull1
Abstract
Astronomers are going to extraordinary lengths in the quest to tot up the 'ordinary' matter in the Universe. The latest initiative has probed hot gas in intergalactic space by means of an X-ray lighthouse.
As cosmological measurements have become feasible and more precise, astronomers have undertaken 'cosmic inventories' of mass and energy in all their forms. Nature is quite devious, hiding matter in a range of astronomical objects (stars, planets, galaxies), in intergalactic gas at temperatures of 104 K to 107 K, and in even more exotic forms — so-called dark matter and dark energy.
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J. Michael Shull is in the Department of Astrophysical and Planetary Sciences, University of Colorado, 391-UCB, Boulder, Colorado
80309, USA.
e-mail: Email: mshull@casa.colorado.edu
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