By listening to "music" played by shaking stars, astronomers could use asteroseismology as a new type of cosmic distance ruler, perfecting the 3D map of two billion stars being built by Gaia.

How the songs of stars can help perfect Gaia's sweeping map of our galaxy

Source: space
Source Link: https://www.space.com/gaia-satellite-stars-music-distance-measurements-asteroseismology