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The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length based on the distance from the Earth to the Sun. The precise value of the AU is currently accepted as 149,597,870,691 ± 30 metres (nearly 150 million kilometres or 93 million miles). The symbol ua...
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Definition of astronomical from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. Share this entry: Link to this page: Cite this page:
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The Peoria Astronomical Society The Peoria Astronomical Society has been diligently working to restore the Northmoor Observatory for the past several years. Anyone interested in keeping this historic telescope available to the public, please send tax-deductible contributions to: Peoria Astronomical Society P...
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Astronomy - Wikipedia, the free encyclopedia
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Established 1899, AAS is the major professional organization in North America for astronomers, other scientists and individuals interested in astronomy. The American Astronomical Society (AAS), established 1899, Working with the IAU, ASP, AAVSO, Astronomical League, IDA and other astronomy partners,
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Definition: An Astronomical Unit is approximately the mean distance between the Earth and the Sun. It is a derived constant and used to indicate distances within the solar system. Its formal definition is the radius of an unperturbed circular orbit a massless body would revolve about the sun in 2*(pi)/k days (i.e., 365.256...
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This site is intended for students age 14 and up, and for anyone interested in learning about our universe. The Astronomical Unit is the average distance between the Sun and Earth. Its value is 149,597,870 km (about 93 million miles). There are a variety of ways to measure it,
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The seasons begin at the time of the solstice or equinox. (This is a newer, updated version of this page. I am hoping that this newer version will make more sense to folks, and that the amount of email I get from this page will ease up a bit! ;-) ) How it works: During a local news broadcast,
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Astronomical Consultants & Equipment Inc (ACE) currently designs and manufactures research grade telescopes in the 0.5-m to 2.0-m range. A completely integrated suite of instrumentation, such as finder-guider systems, filter wheels, spectrographs and dome controls provides a turnkey package for robotic observatories.
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Photographs of common astronomical objects The photograph on the left was taken with an amateur Tal-2 telescope without any object tracking activated, In the left photograph the setup of the 150mm (6inch) motorised Newtonian reflector telescope. All the parts are neatly packaged in a durable and sturdy wooden case,
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