ASTRONOMICAL UNIT

(AU), mean distance between the earth and sun; one AU is c.92,960,000 mi (149,604,970 km). The astronomical unit is the principal unit of measurement within the solar system, e.g., Mercury is just over 1 / 3 AU and Pluto is about 39 AU from the sun.

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Questia Books and Articles on: Astronomical Unit
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books on: Astronomical Unit  - 7262 results

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1.
Blowing Bubbles in the Cosmos: Astronomical Winds, Jets, and Explosions
Book by T. W. Hartquist, J. E. Dyson, D. P. Ruffle; Oxford University Press, 2004
Subjects: Astrophysical Jets, Solar Wind, Stars, New
...terms of the AU or Astronomical Unit (1 AU = mean Earth-Sun...Sun. The biggest unit of length commonly...between many types of astronomical objects. However...timescales. 2.5 Astronomical Densities Astronomers...just the mass per unit volume. For some...
2.
Astronomical Thought in Renaissance England: A Study of the English Scientific Writing from 1500 to 1645
Book by Francis R. Johnson; Johns Hopkins Press, 1937
Subjects: Astronomy--Early Works To 1800, Astronomy--History, English Literature--Early Modern, 1500-1700--History And Criticism, Literature And Science
...HUNTINGTON LIBRARY PUBLICATIONS ASTRONOMICAL THOUGHT IN RENAISSANCE ENGLAND A...HUMPHREY MILFORD OXFORD UNIVERSITY PRESS ASTRONOMICAL THOUGHT IN RENAISSANCE ENGLAND...century, in order to chart the course of astronomical thought in scientific circles during...
3.
The World-Conception of the Chinese: Their Astronomical, Cosmological and Physico-Philosophical Speculations
Book by Alfred Forke; Arthur Probsthain, 1925
Subjects: Philosophy, Chinese
...and Yang and the Five Elements = 7. From theses elements are heaven and earth, 2+7=9, and these 9 may again be regarded as a unit, the universe = 1. The forms of the universe undergo continual changes. b Lieh-tse, I., p. 2 r. . c...
4.
Photography in Astronomy
Book by E. W. H. Selwyn; Eastman Kodak Co., 1950
Subjects: Astronomical Photography
...curve of 0.4 of a logarithmic intensity unit. Below this section is shown a curve...respects, peculiarly appropriate for astronomical work. When used in reflecting telescopes...sensitivities of the plates supplied for astronomical purposes are diagrammatically illustrated...
5.
Beyond the Milky Way
Book by George Ellery Hale; C. Scribners Sons, 1926
Subjects: Astronomical Instruments, Nebulae, Stars--Radiation
...correctness of this conclusion. Their tablets also mention a time unit, called kasbu , equal to two hours. A watch consisted of two...The ruins of Birs-Nimroud. The ancient Chaldeans made their astronomical observations from the summits of such towers. many lists...
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journal articles on: Astronomical Unit  - 190 results

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1.
New Concepts for a Unit on the Ancient Maya
Journal article by Sarah McCulloh Lemmon; Social Studies, Vol. 81, 1990
Subjects: History--Study And Teaching, Social Sciences--Study And Teaching
New Concepts for a Unit on the Ancient Maya SARAH McCULLOH...deplorable results--witness the ruined "astronomical frieze" at Xunantunich in Belize...quite aware of the mathematical and astronomical discoveries made by the Maya, especially...
2.
The Intrinsic Distribution and Selection Bias of Long-Period Cometary Orbits
Journal article by Peter E. Jupp, Peter T. Kim, Ja-Yong Koo, Paul Wiegert; Journal of the American Statistical Association, Vol. 98, 2003
...directions, that is, unit vectors. There are astronomical reasons for believing...astronomical units. (An astronomical unit is defined as the...of the earth. For astronomical reasons given by...concentrating on the directed unit normals and introducing...
3.
Pluto or Bust!
Journal article; The Technology Teacher, Vol. 64, 2005
Subjects: Pluto (Planet)--Discovery and exploration, Solar system--Discovery and exploration
...out to Pluto? What is it like? * The distance from Earth to the Sun, about 93 million miles, is defined as one astronomical unit, or AU. Although Plutos average distance from the Sun is 39.5 AU, at its closest point to the Sun it is 29.6 AU...
4.
Estimating the Large-Scale Structure of the Universe Using Quasi-Stellar Object Carbon IV Absorbers
Journal article by J.M. Loh, M.L. Stein, J.M. Quashnock; Journal of the American Statistical Association, Vol. 98, 2003
...the window that are common in astronomical surveys. Besides the reduced...sub.d is the surface area of a unit sphere in d dimensions. Astronomers...sub.d is the surface area of a unit sphere in d dimensions. The...mean number of absorbers per unit comoving volume. Set Q = pizeta...
5.
"The Battle of the Standards": Great Pyramid Metrology and British Identity, 1859-1890 (1)
Journal article by Eric Michael Reisenauer; The Historian, Vol. 65, 2003
Subjects: National identity--Analysis, United Kingdom--Political aspects
...University of Edinburgh, Fellow of the Royal Astronomical Society and of the Royal Societies...out-Taylors" Taylor by finding some peculiar astronomical and geodesic coincidences in the monuments...misunderstanding of accepted arithmetical and astronomical methods encouraged Piazzi Smyth and...
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magazine articles on: Astronomical Unit  - 85 results

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1.
Buying into Beverly Hills
Magazine article by Benjamin J. Stein; The American Spectator, Vol. 31, December 1998
Subjects: Clinton, Bill, Presidents, Television programs, Women
...question was asked about "What is an astronomical unit?" The idea is to make up a gag...answer. My gag answer was, "An astronomical unit is the number of lies Bill Clinton...out," she said. "Hes selling my unit. Can I come live with you?" "With...
2.
Time and Tithes: Patricia Wright Revisits the Career of a 14th-Century Abbot Who Ruthlessly Protected the Interests of His Abbey and Who Built a Remarkable Celestial Clock
Magazine article by Patricia Wright; History Today, Vol. 54, August 2004
Subjects: Abbeys--14th century AD, British history--14th century AD, Clocks and watches--14th century AD, Clocks and watches--Innovations, Clocks--14th century AD, Clocks--Innovations
...approach completion. It was in two parts: a weight-driven section to tell and chime the hours, and a computer-like astronomical unit driven by gears and links to display the positions of the sun, stars and moon. But all these pressures had taken...
3.
Outer Limits: Solar System at the Fringe
Magazine article by Ron Cowen; Science News, Vol. 169, January 14, 2006
Subjects: Astronomers--Research, Brown, Mike--Research, Solar system--Observations, Solar system--Research
...Earth-sun distance, which defines an astronomical unit (AU). The pancake-shaped belt...ruling by the International Astronomical Union. Xena is now located 97...circular of the International Astronomical Union, he and his colleagues...
4.
The Case for the $435 Hammer
Magazine article by James Fairhall; Washington Monthly, Vol. 18, January 1987
Subjects: Defense contracts--Investigations, Government purchasing--Investigations, United States. Department of Defense--Investigations
...late to be added to the first production run-- by an order for one or two or three of the same item at a relatively astronomical unit price. This type of institutionalized failure in spareparts procurement, which illustrates David Packards recent...
5.
Dark, Mad, Mortal: A Memoir of Exploration
Magazine article by Robert Hahn; The Antioch Review, Vol. 64, Fall 2006
Subjects: Australia--History, Cook, James--Discovery and exploration, Tahitians--Discovery and exploration
...spots, and precise measurements taken, the data would establish the suns distance from the earth--the so-called Astronomical Unit, a key to measuring the universe. Although no transit of Venus would occur in his own lifetime, Halley, with an...
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newspaper articles on: Astronomical Unit  - 90 results

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1.
Astronomical Society Parties with the Stars
Newspaper article; Daily Herald (Arlington Heights, IL), July 17, 2009
...etc. Deadline is two weeks before event date. Lake County Astronomical Society: 7:30 p.m. Friday, July 17, Volo Bog State Natural...1-4 p.m. Saturday, July 18, Doggie Do Rite, 1855 Techny Road, Unit B, Northbrook. Suburban Chicagoland Dachshund Lovers invite...
2.
Special Unit to Smash Loan Sharks; Task Force Set Up
Newspaper article; Evening Chronicle (Newcastle, England), September 20, 2007
Special Unit to Smash Loan Sharks; Task Force Set Up. Byline: By PAUL MCMILLAN...deprived areas are among the most targeted. Victims are not only charged astronomical interest rates but can face violence, intimidation or blackmail. Now...
3.
BRITAIN'S REAL X FILES; for Four Years NICK POPE Worked for the Government's Secret UFO Unit. Only Now Can He Reveal the Astonishing Truth about ..
Newspaper article; The Daily Mail (London, England), February 2, 2005
...Four Years NICK POPE Worked for the Governments Secret UFO Unit. Only Now Can He Reveal the Astonishing Truth about...sightings. Was there military activity in the area? Was there an astronomical event such as a shooting star, perhaps, or space debris reentering...
4.
Venus De Maelor; Astral Phenomenon -and North Wales Children Play a Starring Role
Newspaper article; Daily Post (Liverpool, England), June 9, 2004
...distance between the Earth and the sun,called an astronomical unit. The information will be collated at the European...which allowed them to approximate the distance of an astronomical unit Although 12 pupils were directly involved in the...
5.
50 for Fun; Phil Brown's Trivia Quiz
Newspaper article; Daily Post (Liverpool, England), June 8, 2006
...Which Indian state bordering Tibet, Nepal and Bhutan was an independent country under a monarchy until 1975? 6 Which astronomical unit is defined as the distance at which the mean radius of the earths orbit subtends an angle of one second of arc...
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encyclopedia articles on: Astronomical Unit  - 15 results

       More encyclopedia Results: 1-10 11-15 >>  
 
1.
Astronomical Unit
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ASTRONOMICAL UNIT (AU), mean distance between the earth and sun; one AU is c.92,960,000 mi (149,604,970 km). The astronomical unit is the principal unit of measurement within the solar system, e.g., Mercury is just...
2.
Solar Constant
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...sun, which changes because of the earths elliptical orbit. For computing the value of the solar constant, the astronomical unit , or average earth-sun distance, is used. ____________________ Copyright 2009 Columbia University Press. Used...
3.
Solar System
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...whose orbits are larger are called superior planets. The unit for measuring distance in the solar system is the astronomical unit (AU), the average distance between the earth and the sun. The mean distances of the planets from the sun range...
4.
Sun , in Astronomy
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...000 km) at aphelion (see apsis ). The mean distance is c.92,960,000 mi (149,591,000 km); this is taken as the astronomical unit (AU) of distance used for measuring distances within the solar system. The sun is approximately 865,400 mi (1,392...
5.
Astronomy
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...revolution around the sun) of the planets and their distance from the sun relative to the sun-earth distance (see astronomical unit ). Brahe and Kepler The great astronomer Tycho Brahe (1546 1601) was principally an observer; a conservative...
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