... The Moon orbits the Earth which in turn spins on its axis. ... against more distant stars over the course of a year as the Earthorbited the Sun ... the planets and Sun orbited a fixed, unmoving spherical Earth in circular orbits ...
... Several who drew this indicated that the Earthorbited the Sun daily. ... was found, where two children had the Earthorbiting the Sun by day then the Moon by ... а . ~25% . ~ 1% . Sun orbitsEarth daily . 17% & - . €а . €а . ...
... block portions of the sky, from everywhere on Earth at all times in some bands > > · 1980s Low EarthOrbit (LEO) satellite systems developed > > > GLONASS system developed; Experimental GPS satellites launched Satellite-based position determination ...
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Ссылки http://www.atnf.csiro.au/people/Tasso.Tzioumis/sms2014/presentations/Gergely(Purpose_of_school).ppt.pdf -- 1429.8 Кб -- 18.05.2014 Похожие документы
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