Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8512844a&link_type=abstract
Presented at 16th Intern. Congr. of Theoret. and Appl. Mech. Lingry, Denmark, 19-25 Aug. 1984 and Plasma Astrophys. Course and W
Astronomy and Astrophysics
Astronomy
Cosmic Plasma, Cosmology, Fluid Mechanics, Space Exploration, Spaceborne Astronomy, Cosmic Dust, Cosmic Gases, Cosmochemistry
Scientific paper
The contribution of spacecraft hardware to astronomy and astrophysics is discussed. Data from infrared, ultraviolet, X-ray and gamma ray instruments revealed that the cosmic environment consists, almost totally, of magnetized, often dusty, plasma. In situ measurements in the magnetospheres - including heliosphere - combined with laboratory experiments gave information about the properties of cosmic plasmas which makes necessary a drastic revision of the classical theory of plasmas. The results are applied to cosmogony. Magnetospheric physics has matured to such an extent that it is possible to treat certain aspects of cosmogony as an extrapolation of magnetospheric physics. It is shown that certain events 4 to 5 billion years ago can be reconstructed with an accuracy of a few percent.
Alfvén Hannes
Cech F.
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