• 发明用来估计找到外星人机率著名德雷克方程指出我们银河系可能存在一万个可探测文明

    The famous "Drake Equation" which he invented to estimate the chances of finding et indicated there might be 10, 000 detectable civilisations in our galaxy, the Milky Way.

    youdao

  • 发明用来估计找到外星人机率著名德雷克方程指出我们银河系可能存在一万个可探测文明

    The famous "Drake Equation" which he invented to estimate the chances of finding et indicated there might be 10, 000 detectable civilisations in our galaxy, the Milky Way.

    youdao

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