000			01627nas a2200241uu 4500
000			00568cam a22001693a 4500
001			40240
003			PGUSA
005			20160229143257.0
008			120715s2012||||xxu|||||s|||||000 | eng d
040			_a PGUSA _b eng
042			_a dc
050		4	_aQB
100			_a Olmsted, Denison, _d 1791-1859
245			_a Letters on Astronomy : _b _b in which the Elements of the Science are Familiarly Explained in Connection with Biographical Sketches of the Most Eminent Astronomers _h [recurso electrónico] / _c Denison Olmsted
260			_b Project Gutenberg, _c 2012
505			_a Preface -- Introductory observations -- Doctrine of the sphere -- Astronomical instruments; telescope -- Observatories -- Time and the calendar -- Figure of the earth -- Diurnal revolution -- Parallax and refraction -- The sun -- Annual revolution; seasons -- Laws of motion -- Terrestrial gravity -- Sir Isaac Newton; unversal gravitation; figure of the earth's orbit; precession of the equinoxes -- The moon -- The moon; phases; harvest moon; librations -- Moon's orbit; her irregularities -- Eclipses -- Longitude; tides -- Planets; Mercury and Venus -- Superior planets: Mars, Jupiter, Saturn, and Uranus -- Copernicus; Galileo -- Saturn; Uranus; asteroids -- The planetary motions; Kepler's laws; Kepler -- Comets -- Meteoric showers -- Fixed stars -- System of the world -- Natural theology -- Recent discoveries.
506			_a Public domain in the USA.
516			_a Text
653			_a Astronomy
830			_a Project Gutenberg _v 40240
856			_u http://www.gutenberg.org/ebooks/40240
999			_c42427 _d42427