Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sf2a.conf...41e&link_type=abstract
SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli
Astronomy and Astrophysics
Astrophysics
Scientific paper
We draw an assessment of the place of Fundamental Astronomy among the various common fields of Astronomy and Geophysics. The development of new methods in Celestial and Space Mechanics by numerical, analytical, and semi-analytical approaches can address some basic questions on the very long-term behaviour of celestial bodies of the solar system evolving under gravitational forces. Thanks to new generations of algorithms and computers, many fascinating results have been recently obtained on the formation and the evolution of the solar system. On a complementary point of view, very precise celestial and terrestrial reference frames deduced from space techniques are mandatory to properly address basic questions in astronomy, astrophysics, geophysics and fundamental physics. These references, including time references, are required to be more and more precise every day. Such reference systems are also on the basis of many civil and space uses (the GPS or Galileo systems, for example).
Barlier François
Deleflie Florent
Exertier Pierre
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