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Date: 2014-02-18 00:44:10Astrophysics Star Celestial sphere European Southern Observatory Jan Oort Milky Way Oort cloud Astronomy Science Space | Introduction to Astronomy - MarchBallarat Observatory) Date Day 1 SaturdayAdd to Reading ListSource URL: observatory.ballarat.netDownload Document from Source WebsiteFile Size: 29,10 KBShare Document on Facebook |