Sagan Websites
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NoBeliefs.com (Freethinkers)
Beliefs create mental barriers and have caused violence, ignorance, and intolerance. Do we need to believe at all?
853,331 
$ 1,440.00
Voyager Golden Record
This is a present from a small, distant world, a token of our sounds, our science, our images, our music, our thoughts and our feelings.
Not Applicable $ 8.95
AstroPT - Informação e Educação Científica
Notícias, artigos, opiniões, o melhor em português sobre o universo da Ciência
Not Applicable $ 8.95