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Parks Optical, Inc. (Popularity:  )
Manufacturer microscopes and optical components. A selection of components and accessories.
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Worldtime (Popularity: )
Information on local time and sunrise and sunset times in several hundred cities, and a ...
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Absolute Beginner's Astronomy Forum Archives (Popularity: )
Discussions and questions with answers.
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The Electric Universe (Popularity: )
Physics knows four forces; 20th-century scientists were convinced that one of those, the electric force, ...
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Curious About Astronomy? Ask an Astronomer! (Popularity: )
scientists at Cornell University will answer your astronomy questions.
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Scientific American: 15 Answers to Creationist Nonsense (Popularity: )
Review and critique of popular arguments against the theory of evolution by natural selection.
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The Silicon Sky (Popularity: )
Project links, weather, comet observing, interest links, minor planets, and resources.
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Electronic Journal of Theoretical Physics (EJTP) (Popularity: )
Electronic Journal of Theoretical Physics
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StarLore (Popularity: )
Guide to the galaxy, and designed as a reference point for all levels.
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The Space Place Images of Earth's Moon for the Classroom (Popularity: )
NASA Moon images with captions showing different phases, suitable for printing and classroom display.
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PhysLINK: Ask the Experts (Popularity: )
astronomers and physicists answer submitted questions.
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Aarseth's N-body software (Popularity: )
[open source - multiplatform] Direct N-body algorithms.
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AGE - Analysis Software for Land, Sea, Air, and Space (Popularity: )
Products, user community, support, services, training, and events.
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Observing (Popularity: )
The sky at a glance, highlights, sky chart, and gallery from Sky and Telescope Magazine.
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The Astronomical Society of South Australia (Popularity: )
founded in 1892, is the oldest society of its kind in Australia. Its objectives are ...
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International Scientific Products Exchange (Popularity: )
Searchable directory listing suppliers and buyers of products and services for scientists.
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AIP Physics Today (Popularity: )
A magazine for physicists with feature articles, news stories, and analyses, and a forum for ...
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International Occultation Timing Association (IOTA) (Popularity: )
was established to encourage and facilitate the observation of occultations and eclipses. It provides predictions ...
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Clement Focuser (Popularity: )
Uniquely designed, patented focuser for use on a variety of telescopes. Offers optional electric focus ...
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Implementation of the ISO 8601 Standard (Popularity: )
A list of countries around the world that have adopted the ISO 8601 standard, also ...
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Astronomy
