Abstract
On March 6 and 9, 1986, for the first time in the history of science, the Russian spacecraft Vega-1 and -2 approached the nucleus of comet 1P/Halley and flew by at a small distance. A while later, on March 14, 1986, the Giotto spacecraft (European Space Agency (ESA)) followed them. Together with the Japanese spacecraft Suisei (Japan Aerospace Exploration Agency (JAXA)), they obtained spaceborne investigations of cometary nuclei. Direct studies of cometary bodies that bear traces of the Solar System formation were continued in the next missions to comets. Starting from 2014 and up to 2016 September, the Rosetta spacecraft (ESA), being in a low orbit around the nucleus of comet 67P/Churyumov–Gerasimenko, has performed extremely sophisticated investigations of this comet. Here, we compare some results of these missions. The paper is based on the reports presented at the memorial conference dedicated to the 30th anniversary of the Vega mission, which took place at the Space Research Institute of the Russian Academy of Sciences in March, 2016, and does not pretend to comprehensively cover the problems of cometary physics.
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Original Russian Text © L.V. Ksanfomality, 2017, published in Astronomicheskii Vestnik, 2017, Vol. 51, No. 3, pp. 225–242.
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Ksanfomality, L.V. Comparison of some characteristics of comets 1P/Halley and 67P/Churyumov–Gerasimenko from the Vega and Rosetta mission data. Sol Syst Res 51, 204–220 (2017). https://doi.org/10.1134/S0038094617030054
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DOI: https://doi.org/10.1134/S0038094617030054