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Date: 2010-05-19 00:24:31Physical cosmology Local Group Spiral galaxies NGC objects Telescopes Globular cluster Andromeda Galaxy European Southern Observatory Cosmic distance ladder Astronomy Space Extragalactic astronomy | nightwatch Volume 30 Number 5 May 2010Add to Reading ListSource URL: www.pvaa.usDownload Document from Source WebsiteFile Size: 696,29 KBShare Document on Facebook |