Seth Shostak

Virtually any pointed edifice is considered a candidate for alien engineering. After all, how could the Egyptians or Mayans have possibly stacked up stone blocks into pyramids?
Virtually any pointed edifice is considered a candidate for alien engineering. After all, how could the Egyptians or Mayans have possibly stacked up stone blocks into pyramids?
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These are some quotes by American author Seth Shostak Scientist.