There is growing evidence that evolution of red giant stars is often affected by an interplay with a nearby companion. Using the Atacama Large Millimeter/submillimeter Array (ALMA) and ESO’s Atacama Pathfinder EXperiment (APEX), astronomers have now observed a beautiful nebula that resulted from a confrontation between a red giant and its lower-mass partner. This ALMA image shows the outcome of a stellar fight: a complex and stunning gas environment...
