The Importance of Skepticism in Astrophysics

"There's no reason in principle why there couldn't be more advanced life forms than us, like out in space," he says. "I think a lot of physicists would even say that it's actually incredibly likely and that it would be very unlikely for there not to be." He adds: "It doesn't like throw a monkey wrench into our modern secular materialist metaphysics the way a ghost, a claim of seeing a ghost would, right?"