Russian space flight pioneer Konstantin Tsiolkovskii (or Tsiolkovsky) had far reaching aspirations for humanity as a space-based, galaxy roaming, species.
Earth is the cradle of mankind, but one does not stay in the cradle forever.
Russian space flight pioneer Konstantin Tsiolkovskii (or Tsiolkovsky) had far reaching aspirations for humanity as a space-based, galaxy roaming, species.
Earth is the cradle of mankind, but one does not stay in the cradle forever.
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