I’ve never forgotten the scene in Men in Black, when Jay (Will Smith) and Kay (Tommy Lee Jones) are sitting on a bench facing the New York City skyline. Jay has gotten a brief but shocking glimpse of the secret alien world Kay is trying to recruit him into, one that few people know about.
“Why the big secret?” Jay asks. “People are smart. They can handle it.”
“A person is smart,” Kay responds, but “people are dumb, panicky, dangerous animals and you know it. Fifteen hundred years ago, everybody knew the Earth was the center of the universe. Five hundred years ago, everybody knew the Earth was flat, and fifteen minutes ago, you knew that humans were alone on this planet. Imagine what you’ll know tomorrow.”
This scene came to mind right after I finished reading Thomas Levenson’s new book The Hunt for Vulcan: …And How Albert Einstein Destroyed a Planet, Discovered Relativity, and Deciphered the Universe. Levenson writes about the now-forgotten period between 1859 and 1915 when scientists believed our solar system had a planet called Vulcan within Mercury’s orbit. An anomaly in Mercury’s orbit affected its gravitational trajectory just enough to suggest another mass was tugging on it. Professional and amateur astronomers alike made several attempts to observe this mystery mass, and some reported doing so. But it wasn’t until decades later, when Einstein applied the principles of his new theory of relativity to the orbital calculations, when those sightings were finally reclassified as misidentified stars and the coulda-woulda-shoulda planet Vulcan was expunged from the solar system.