ad.usno.navy.mil: 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
giantstars.de: 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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