The extreme exoplanet is so close to its star that it is the fastest planet of its type ever found.
spots exoplanets by the tiny dips in light they cause as they cross the face of their parent star, the so-called"transit method" of exoplanet detection.
TESS began observing TOI-2109, a star located in the southern portion of the Hercules constellation, in May 2020. The star had been identified by the mission as a TESS Object of Interest due to the possibility that it might host an orbiting planet. The planet is tidally locked, meaning it has a blisteringly hot dayside and a cooler nightside, which astronomers haven't yet been able to properly characterize.data, which raises questions about what is really happening there," Avi Shporer, research scientist at MIT's Kavli Institute for Astrophysics and Space Research, said.
"Ultrahot Jupiters such as TOI-2109b constitute the most extreme subclass of exoplanet," Wong says."We have only just started to understand some of the unique physical and chemical processes that occur in their atmospheres—processes that have no analogs in our own solar system."
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