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The top documents tagged [famous astronomers]
2010 Sci Oly Events. B Events 15 team members with up to 6 alternates Competing with 7 th through 9 th grade Only five 9 th graders on the team! 20 events
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United States Naval Observatory Sponsor The U.S. Naval Observatory dates from 1830 when the Depot of Charts and Instruments was established under the
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