Astronomers have uncovered new insights into a star once believed to be nearing a dramatic supernova explosion. The star, called AT 2016blu, lies about 29 million light-years away and has shown repeated outbursts since its discovery in 2012. These outbursts, which occurred 27 times between 2012 and June 2026, were initially thought to signal the star's imminent collapse into a supernova. However, recent research published in The Astrophysical Journal suggests a different explanation: the outbursts are caused by interactions with a companion star, not by the star itself preparing for a supernova. The study, titled "AT 2016blu: Accretion-Powered Outbursts in a Luminous Blue Variable and Compact Object Binary," was led by Mojgan Aghakhanloo of the University of Virginia. Researchers combined new X-ray data with previous observations to show that the outbursts are driven by material from AT 2016blu being pulled toward a compact object, such as a black hole or neutron star. This process, known as accretion, releases energy in the form of X-rays, which were detected by the Chandra X-ray Observatory during a major outburst in March 2026. To test their hypothesis, Aghakhanloo and her team predicted when the outbursts would occur based on the orbital period of the binary system. Their observations confirmed that the X-ray emissions were linked to the star’s interaction with its compact companion. Earlier data showed no X-rays, supporting the idea that the outbursts are powered by mass transfer rather than internal processes within the star itself. This makes AT 2016blu the first known luminous blue variable (LBV) star with a compact companion whose outbursts are driven by accretion. The discovery suggests that AT 2016blu is part of a high-mass X-ray binary system, where a massive star like AT 2016blu loses material to a compact object as they orbit each other. This finding connects the star to a broader class of models that explain certain pre-supernova events through interactions between massive stars and compact objects. Aghakhanloo plans to use more observations from the Chandra X-ray Observatory to study similar systems, and the upcoming Vera Rubin Observatory sky survey is expected to identify many more such systems, helping astronomers better understand these complex stellar interactions.