The dips were chromatic, which was a real important clue that that probably wasn't a solid structure then that was going around it. The behavior of in the way the light changed or the dips changed across wavelengths was fully consistent with what small particulates would do. So you can never really disprove this life on another planet or on another star. It has infinite avoidance. And then finally, we have incomplete physical understanding of the universe. We may just be detecting some new phenomena.