NASA’s TESS delivers new insights into an ultrahot world

ScienceDaily | Jun 30, 2020 at 7:08 PM
  • With each orbit, KELT-9 b twice experiences the full range of stellar temperatures, producing what amounts to a peculiar seasonal sequence.
  • The planet experiences “summer” when it swings over each hot pole and “winter” when it passes over the star’s cooler midsection.
  • This asymmetry provides clues to the temperature and brightness changes across the star’s surface, and they permitted the team to reconstruct the star’s out-of-round shape, how it’s oriented in space, its range of surface temperatures, and other factors impacting the planet.