... It can also be shown, from orbit geometry calculations combined with knowledge of meteoroid ejection processes from cometary nuclei, that young dust trails in different streams have differently shaped cross sections, and therefore different outburst activity profiles when the Earth encounters them. ... 1999). Figures 1 and 2 illustrate the Earth's 1999 path through this trail for two values of the radiation pressure parameter (the relevance of in trail modelling is discussed e.g. by Asher 2008). ...
... Latest Supernovae . ... Sorted by Name For the years covered, 7501 supernovae and 114 extragalactic novae were reported. 378 of these supernovae were named by CBAT, 1714 were given possible supernova designations, and 5409 were not reported to CBAT. 220 supernovae were found in NGC/IC galaxies, 875 were found in named galaxies 343 objects were discovered by amateurs 4 were brighter than 13th Magnitude 208 were brighter than 16th Magnitude 1080 were brighter than 18th Magnitude 1349 ...
Космическая деятельность в начале 21 века (взгляд изнутри) Г.М. Чернявский НТЦ «Космонит», Российская корпорация ракетно-космического приборостроения и информационных систем 1. ... Однако, монетарный подход в России привел к тому, что международное сотрудничество сводится к участию на рынке космических услуг. ... Но если Европа при тесном взаимодействии с США весьма активна по основным направлениям космической деятельности, то Россия находится под угрозой превращения в «космического извозчика». ...
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Ссылки http://resurs.cpi.space.ru/files/Space_activity_at_the_beginning_of_XXI-st_Century_rus.doc -- 227.0 Кб -- 16.08.2012 Похожие документы
Tuesday, Septemb er 3 `First Galaxies' session 09:40-10:10 Richard Ellis Email: rse@astro.caltech.edu Title: Observations of Star-Forming Galaxies in the Reionization Era Abstract: Deep surveys with the Hubble Space Telescope have provided the primary evidence that star-forming galaxies were present in the first billion years of cosmic history. ... I investigate the cause of this evolution using measurements of the environmental density and star-formation rates of the galaxies at z < 0.6. ...
Report by the ESA-ESO Working Group on Fundamental Cosmology Abstract In September 2003, the executives of ESO and ESA agreed to establish a number of working groups to explore possible synergies between these two major European astronomical institutions on key scientific issues. The first two working group reports (on Extrasolar Planets and the HerschelнALMA Synergies) were released in 2005 and 2006, and this third report covers the area of Fundamental Cosmology. The Working Group's mandate was to
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Ссылки http://www.stecf.org/coordination/esa_eso/cosmology/report.pdf -- 1894.6 Кб -- 04.09.2008 Похожие документы