Why we shouldn’t cry ‘aliens’ about that interstellar space rock just yet

The head of Harvard’s department of astronomy thinks that there’s a possibility that a strange object that visited our Solar System from interstellar space may be an alien probe sent from a distant civilization. He and a colleague outlined their idea in a paper published this week analyzing what the mysterious space object might be, setting off a media frenzy.
But let’s take a breath before we jubilantly cry “aliens.” A single idea about what this object could be d