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Centauri Dreams — The News Forum of the Tau Zero Foundation
descrizione: Interstellar flight considered through current news about space, astronomy and propulsion research.
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Parabolic Arc covers space tourism...and much more: space commercialization, human spaceflight, NASA and international space programs.
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The planets today shows you where the planets are now as a live display - a free online orrery. You can see the planets positions from 3000 BC to 3000 AD, and also ...
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We are the official body that deals with
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