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Date: 2014-04-03 13:36:53Standard candles Space Star types Subdwarf star Star Cosmic distance ladder European Southern Observatory Gravitational microlensing Grism Astronomy Physics Astrometry | hillenbrand_wfirstafta2013.pptxAdd to Reading ListSource URL: wfirst.gsfc.nasa.govDownload Document from Source WebsiteFile Size: 2,04 MBShare Document on Facebook |