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Stars are not perfectly static spheres of light. Their surfaces are covered in granulation, a boiling pattern caused by heat rising from deep within the star and cooling as it reaches the surface. These granules appear as bright, shifting cells that create constant, tiny flickers in a star's brightness. Understanding these rapid fluctuations is essential because they can mimic or mask the faint signals of orbiting planets. By analyzing high-precision data from the JWST, researchers measured t...