Optical observations of artificial Earth satellites by the Smithsonian Astrophysical Observatory grew from a concept in the mind of Dr, Fred Whipple, which he expounded sixty years ago at a gathering of artificial satell

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Date: 2014-10-03 13:18:50 Unmanned spacecraft Retroreflector Satellite Smithsonian Astrophysical Observatory Goddard Space Flight Center Fred Lawrence Whipple Moon Orbiter SELENE Spaceflight Spacecraft Space		Optical observations of artificial Earth satellites by the Smithsonian Astrophysical Observatory grew from a concept in the mind of Dr, Fred Whipple, which he expounded sixty years ago at a gathering of artificial satell Add to Reading List Source URL: ilrs.gsfc.nasa.gov Download Document from Source Website File Size: 96,44 KB Share Document on Facebook

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