An article published in the journal “Nature Astronomy” reports the discovery that almost all blue supergiant stars show a shimmer in brightness on their surface. A team of researchers coordinated by the Katholieke Universiteit (KU) of Leuven, Belgium, used both observations made with NASA’s Kepler and TESS space telescopes and computer simulations based also on asteroseismology to study them thanks to the fact that that shimmer is caused by the presence of gravity waves on the surface of those very massive stars.