Eos (Washington, D.C., July 10) – In a study published in Monthly Notices of the Royal Astronomical Society, researchers announced that they finally demonstrated Bardeen-Petterson alignment, in which a spinning black hole causes the inner portion of a tilted accretion disk to align with the black hole’s equatorial plane. To accomplish the most detailed and highest-resolution black hole simulation to date, researchers used the Blue Waters supercomputer at Illinois.