A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for almost a decade. However, the evidence for this newly theorized world is "not definitive."
Be funny if we share an orbit with another Earth that is exactly in sync to stay behind the sun.
It’d be funnier if it somehow had humans evolved and progressed completely differently from us.