Two U.S. physicists have suggested that the nine concentric rings surrounding the galaxy LEDA 1313424, also known as the Bullseye galaxy, could have emerged through the quantum behavior of particles of dark matter. Through analysis published in The Astrophysical Journal, Pierre Sikivie and Yuxin Zha o at the University of Florida argue that the extraordinary structure wasn't created by a collision between galaxies, as previous theories had suggested—but by a Bose-Einstein condensate of axions. ...read more read less