NASA's TESS helps astronomers study red-giant stars, examine a too-close planet

Ames IA (SPX) Nov 20, 2019

NASA's planet-hunting TESS Mission keeps giving astronomers new realities to examine and explain. Case in point: astronomers using the tools of asteroseismology - the observations and measurements of a star's oscillations, or starquakes, that appear as changes in brightness - have learned more about two stars bright enough to be visible in a dark sky to the naked eye. These red-giant stars