The hot-Jupiter exoplanet HIP 67522b orbits its parent star, HIP 67522, so tightly that it appears to cause frequent flares from the star’s surface, heating and inflating the planet’s atmosphere, according an analysis of data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and ESA’s CHaracterising ExoPlanets Telescope (CHEOPS). An artist’s impression of the young planetary system HIP 67522. Image credit: J. Fohlmeister, AIP. HIP...