Are we alone in the universe? For over half a century, legendary NASA engineer and best-selling science fiction author, Gentry Lee, has explored every aspect of this question in the realms of space science, robotic exploration and the human imagination. At age 82, he has come to a revelatory conclusion.
免責聲明：若本站收錄的資源侵犯了您的權益，我們會及時刪除侵權內容，謝謝合作！