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Astronomy for free
In response to your introduction to astronomy feature (Reach for the Skies, PCW December 2007), I was surprised to see no mention of the two superb open-source multi-platform planetarium software solutions - Stellarium (www.stellarium.org) and Celestia (www.shatters.net/celestia).
For anyone wanting an introduction to astronomy on their computer, what better than being able to access excellent software for zero financial outlay?
Andy Cocker
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