A cosmic mystery unfolds, as science writer Robin George Andrews plays detective on the case of some misbehaving space objects now called dark comets. I’ve long been fascinated by investigations into our solar system’s first known interloper, a cigar-shaped structure called ‘Oumuamua whose origins remain elusive. Now, however, astronomers have found a group of dark comets that share some of the interstellar visitor’s oddities: they accelerate around the sun with no apparent means. These cometlike objects fall into two families, the “innies” and the “outies,” Andrews says. One suggested explanation that may resonate with Severance fans: the innies that inhabit the inner solar system are remnants of their former selves, the outies.