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Celestia<br />
• Category: Science<br />
• Real-time space fly-through simulation.<br />
• Cross-platform tool<br />
• Mac lags a bit behind other versions<br />
• Can be scripted for canned demos<br />
• Contributed downloads for things like ISS<br />
• Fly to any location in the universe<br />
• Price: Free!<br />
Monday, September 19, 2011