Difference between revisions 1813697 and 1813700 on enwikiversity

[[Image:Skylab-73-HC-440HR.jpg|thumb|right|200px|The Saturn V SA-513 lifts off to boost the Skylab Orbital Workshop into Earth orbit on March 14, 1973. Credit: NASA.]]
[[Astronomy]] is performed by location and is subject to local conditions. The shapes and sizes of observatories have changed over time, as have their altitude. The motivations for putting an observatory manned or unmanned at different altitudes has led to a great variety in '''lofting technology'''.
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(contracted; show full)ave been proposed for the original establishment of these orientations.<ref name=Belmonte>{{cite journal|author=Belmonte, J. A.|date=2001|title= On the Orientation of Old Kingdom Egyptian Pyramids|journal= Archaeoastronomy: Supplement to the Journal for the History of Astronomy|volume=32 | issue = 26|pages=S1–S20|bibcode = 2001JHAS...32....1B }}</ref><ref name=Neugebauer>{{cite journal|last= Neugebauer|first= Otto| authorlink= Otto Neugebauer|title= On the Orientation of Pyramids|journal=
 [[Centaurus (journal)|Centaurus]]| volume= 24| pages= 1–3| date= 1980|doi= 10.1111/j.1600-0498.1980.tb00362.x |bibcode = 1980Cent...24....1N }}</ref> It was recently proposed that this was done by observing the positions of two stars in [[w:Ursa Major|the Plough / Big Dipper]] which was known to Egyptians as the thigh. It is thought that a vertical alignment between these two stars checked with a [[w:plumb bob|plumb bob]] was used to ascertain where North lay. The deviations from true North using this model reflect the accepted dates of construction.<ref name=Spence>{{cite journal|author=Spence, K|date=16 November 2000|title=Ancient Egyptian Chronoology and the astronomical orientation of the pyramids |journal=Nature |volume= 408|pages=320–324 |doi=10.1038/35042510 |pmid=11099032 |issue=6810|bibcode = 2000Natur.408..320S }}</ref> Some have argued that the pyramids were laid out as [[w:Graham Hancock#Orion Correlation Theory|a map of the three stars]] in the belt of Orion,<ref name=Hancock>{{cite book|author=Hancock, G|date=1996|title=Fingerprints of the Gods|publisher=New York: Three Rivers Press|isbn=0-517-88729-0}}</ref> although this theory has been criticized by reputable astronomers.<ref name="Fairall">{{cite journal|author=Fairall, A. |authorlink=Anthony Patrick Fairall |date=1999 |url=http://www.antiquityofman.com/Orion_Fairall.html ⏎
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|title=Precession and the layout of the Ancient Egyptian pyramids |journal=[[Astronomy & Geophysics]] |publisher=The Royal Astronomical Society |volume=40 |issue=4 |accessdate=2008-03-22 |url=https://web.archive.org/web/20080228144915/http://www.antiquityofman.com/Orion_Fairall.html |archivedate=2008-02-28 }}</ref><ref name="Krupp">{{cite journal|author=Krupp, E.C. |authorlink=Ed Krupp d C.⏎
|title=Rambling Through the Skies: Pyramid Marketing SchemesPyramid Marketing Schemes |journal=Sky and Telescope |date=February 1997 |url=http://www.antiquityofman.com/Krupp_pyramid_marketing_schemes.html |volume=94 |issue=2 |pages=64}}</ref>
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==Aldershot Observatory==
[[Image:Aldershot observatory 01.JPG|thumb|right|200px|This is an external photograph of the telescope housing. Credit: [[commons:User:Gaius Cornelius|Gaius Cornelius]].]]
The town is generally between 70 m and 100 m above sea level.

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