Stars Directory

Site Listings The Usno Astrometry Department
The Astrometry Department of the U.S. Naval Observatory is responsible for the determination of fundamental positions, motions and distances of selected ...
Keywords: astrometry , astronomy , department of defense , dod , full-sky astrometric mapping explorer Giant Stars
Compare planets of the solar system with some of the largest known stars. Features video with commentary, interactive multimedia and visitor comments.

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