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(Encyclopedia) weight, measure of the force of gravity on a body (see gravitation). Since the weights of different bodies at the same location are proportional to their masses, weight is often used…Mercury, in astronomy
(Encyclopedia) Mercury, in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to…Grimaldi, Francesco Maria
(Encyclopedia) Grimaldi, Francesco MariaGrimaldi, Francesco Mariafränchāsˈkō märēˈä grēmälˈdē [key], 1618?–1663, Italian physicist and mathematician. A Jesuit and professor at Bologna, he studied in…Bouguer, Pierre
(Encyclopedia) Bouguer, PierreBouguer, Pierrepyĕr b&oomacr;gĕrˈ [key], 1698–1758, French mathematician and hydrographer. He made some of the first photometric measurements, calculating the…Halley, Edmond
(Encyclopedia) Halley, EdmondHalley, Edmondhălˈē, hôˈlē [key], 1656–1742, English astronomer and mathematician. He is particularly noted as the first astronomer to predict the return of a comet and…Eris, in astronomy
(Encyclopedia) Eris, in astronomy, the largest known dwarf planet. Eris, whose highly eccentric elliptical orbit ranges from 38 AU to 97 AU and is inclined more than 44°, is the largest known object…Baron Munchausen: A Second Trip to the Moon.
by Rudolph Erich Raspe Voyage eastward-The Baron i... The Baron crosses the Thame...A Second Trip to the Moon. A second visit (but an accidental one) to the moon-The ship driven…Sun, Moon, and Stars: April 2000
Movement of the heavenly bodies: April, 2000 April Calendar Day Phenomenon Hour (UT) Hour (EST) 2 Mercury is 1 degree 6 minutes north of the Moon. 1200 7 am 3…Sun, Moon, and Stars: April 2001
Movement of the heavenly bodies: April 2001 April Calendar Moon Phase Day Phenomenon Hour (UT) Hour (EST) 1 FIRST QUARTER 1100 6 am 5 The Moon is at…Sun, Moon, and Stars: April 2002
April 2002 Overview Week by Week Go to week 1 | 2 | 3 | 4 | 5 Major phenomena…Trending
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