An article published in “The Astrophysical Journal Letters” reports a study of the WR 147 system, and in particular of one of the two stars that form it that is now reaching the end of its life, a massive star that is a very hot giant which belongs to the category of Wolf-Rayet stars. A team of researchers used the VLA radio telescope to study the radio emissions from this star, detecting very strong stellar winds colliding with those of its companion, another giant star but not yet at the end of its life. This phenomenon generates very powerful vortices of materials that look like cosmic pinwheels.