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reference Information
Computer science
100 closest stars
100 brightest stars
Constellations
Glossary
Planets
Galaxies
Stars
Star Map (Professional Version)
Constants: numerical values
A Guide to Astronomy from A to Z
Dictionary-reference book on astronomy from A to Z
Calculator: help portal
Publications on computer science
Publications
Books on Astronet
ASTRONOMY
Computer Science Sites
Open astronomy
ASTROGALAXY
SkyWatching.net
Planetary systems
solar system
The Universe and Us: Past, Present and Future
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