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Andrew Ellicott (January 24, 1754 – August 28, 1820) was an American land surveyor who helped map many of the territories west of the Appalachians, surveyed the boundaries of the District of Columbia, continued and completed Pierre (Peter) Charles L'Enfant's work on the plan for Washington, D.C., and served as a teacher in survey methods for Meriwether Lewis.
A. E. (Andrew Ellicott) Douglass (July 5, 1867 in Windsor, Vermont – March 20, 1962 in Tucson, Arizona) was an American astronomer. He discovered a correlation between tree rings and the sunspot cycle , and founded the discipline of dendrochronology , which is a method of dating wood by analyzing the growth ring pattern.
Ptolemy, the Alexandrian astronomer (2nd century) wrote a treatise, Phaseis—"phases of fixed stars and collection of weather-changes" is the translation of its full title—the core of which is a parapegma, a list of dates of seasonally regular weather changes, first appearances and last appearances of stars or constellations at sunrise or ...
[citation needed] Throughout his life he had the honour to serve in many different clubs and committees. In 1768, Rittenhouse was elected to membership in the American Philosophical Society. He served as librarian, secretary, and after Benjamin Franklin's death in 1790, he became Vice president [6] then served as president of the society until ...
Rare Earth was succeeded in 2003 by the follow-on book The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of our World, also by Ward and Brownlee, which talks about the Earth's long-term future and eventual demise under a warming and expanding Sun, showing readers the concept that planets like Earth ...
The astronomer used the instrument to measure the zenith distance, an angle created between a star’s position in the sky, the observer, and the point in the sky directly above the observer, the ...
14825 Fieber-Beyer (Sherry Fieber-Beyer, American Astronomer/Planetary Scientist) 15395 Rükl (Antonín Rükl) 15420 Aedouglass (Andrew Ellicott Douglass, American astronomer) 15467 Aflorsch (Alphonse Florsch, French astronomer) 15955 Johannesgmunden (John of Gmunden) 15963 Koeberl (Christian Koeberl) 16682 Donati (Giovanni Battista Donati)
According to astronomer Fred Espenak, who literally writes the book on this stuff (he’s calculated full and new moon distances from Earth through year 2500 on his site AstroPixels.com), October ...