Samuel N. Quinn

A family moves into a cramped apartment in the city center. If the move was calm, relatives might have moved in with them. But if the family was evicted from their old home by a storm, they'll end up alone in the new place.

The Gaia space telescope measures star positions with an accuracy of a microarcsecond, like spotting a coin on the Moon from Earth. In 2022, it noticed that the bright star HD 12800 was wobbling slightly, as if tugged by an invisible companion. Astronomers hypothesized that a planet orbits the star. But a wobble can be deceiving.