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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 209 (1966), S. 1278-1279 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE has recently been much interest in the helium content of the universe. A variety of observations, mainly on objects in our own Galaxy but some of nearby galaxies, have suggested that the helium abundance relative to hydrogen may be rather uniform with about one helium atom to every eleven ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 310 (1984), S. 706-706 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHEN a star explodes as a supernova, there is a short period in which it is as luminous as a whole galaxy of ordinary stars. The sudden appearance of such a "new star" has in the past been regarded as a portent, and two supernovae observed in 1572 and 1604 played a part in the acceptance of the new ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 325 (1987), S. 494-494 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A. G. W. (Al) Cameron has made many notable contributions to astrophysics in the past 30 years. He was trained as a nuclear physicist, but a latent interest in astrophysics was activated by Paul Mer-rill's 1952 discovery of the unstable element technetium in stars. Cameron started to work on ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 10-10 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - In Sir Mark Richmond's speech "A future for British science" (Nature 353, 379; 1991), he states: "Some research topics are so expensive (or otherwise demanding) that only a few institutions are able to participate in them. Examples are astronomy (at least when it requires large ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 360 (1992), S. 120-120 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] OVER the past 20 years, astronomers have come to realize that considerable mass is lost from stars at many phases in their evolution and that many of the most dramatic stellar events involve the interaction of two stars in a close binary system. Most textbooks on stellar evol-ution are largely ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 356 (1992), S. 395-396 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE briefest of perusals of these two reference books suffices to show just how dramatically our knowledge of the Universe has increased in the past 50 years. In 1940, observational astronomy meant optical astronomy, whereas now the Universe is studied in all regions of the electromagnetic ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 876-876 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FOR some time there has been a need for a new book on the theory of variable stars to consider the considerable developments in the subject that have taken place since the publication of Rosseland's The Pulsation Theory of Variable Stars (Oxford University Press, 1949). Now there are two new books: ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 102-102 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BINARY stars have always been important for astronomers because the only direct way of determining stellar masses involves the application of Kepler's laws to the observed motions of the components. In addition, a study of eclipsing binaries can give information about stellar radii and variation of ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 817-817 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Stellar Evolution. Second edition. By A. J. Meadows. Pp. 171. (Pergamon: Oxford, 1978.) Hardback £7.50; paperback £2.50. THE subject of stellar structure and evolution is believed to be the branch of astrophysics which is best understood. Because most parts of physics- such as nuclear ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 232-234 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Since the discovery of the cosmic microwave radiation1, and the realisation that most astronomical objects whose chemical composition is known have a similar helium content2, it has been generally accepted that most of the helium was produced in the very early stages of the Universe. It is also ...
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