Astronomer, science communicator, and the era's most influential public UFO skeptic - who nonetheless held high security clearances, worked on Project A119 (a 1958 plan to detonate a nuclear device on the Moon), used the Drake equation to estimate frequent past visitations of Earth, and (per Richard Hoagland and others) privately encouraged anomaly researchers while publicly ridiculing them. A two-faced-skepticism figure paralleling Donald Menzel.
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