Using the Transiting Exoplanet Survey Satellite (TESS), a spacecraft designed to search for exoplanets, astronomers discovered an unusual quadruple star system. During another dedicated observing campaign, XRISM revealed that hot plasma signals follow the orbital motion of an otherwise invisible companion star. And a new study by Japanese scientists has shown that our Sun and numerous similar “solar twins” may have migrated together from the core of the Milky Way galaxy.