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A detailed study on the multiple star system led by Spanish astrophysicists has identified the period, mass and emission of high energy photons of the main stars of the system
Science magazine publishes special edition on findings of Rosetta, on orbit around comet 67P Churyumov-Gerasimenko since August 2014
Between the light of the sun and our heads , there are a set of gaseous layers composed of different chemical species and it extend over 100 kilometers: the atmosphere.
"Mapping the Milky Way is like trying to get the complete map of London unable to leave Trafalgar Square". This is one of the objectives of the space mission GAIA, one of the most ambitious of the European Space Agency in recent decades.