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Space
Space
Science
Robert Lea

How scientists are using exoplanets to map out 'polka dots' on stars

An illustration shows a exoplanet about to transit or cross the face of its parent star which is punctuated with "polka dot" stellar spots.

NASA scientists have devised a new way to use planets that cross, or "transit," the face of their parent stars to investigate stellar "spottiness." The new technique, called the "StarryStarryProcess," could also be used to discover more about the atmospheres of planets.

The StarryStarryProcess builds upon the transit method that has been employed by NASA's TESS (Transiting Exoplanet Survey Satellite) and now-retired Kepler space telescope missions to detect exoplanets. It could be employed by astronomers to assess data from these missions and from NASA's forthcoming Pandora exoplanet-observing satellite.

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