Certain supernovas do not destroy their stars, and a recent discovery has offered new insights into this unusual phenomenon. A group of professional and amateur astronomers observed one such event, known as an impostor supernova, which resembles a true supernova but does not result in the destruction of the star. These events remain poorly understood, as their nature and causes are still largely unknown. Impostor supernovas are rare and mysterious, often mistaken for real supernovas due to their similar brightness and appearance in the sky. One such event, named AT 2016blu, was studied by a team led by Mojgan Aghakhanloo from the University of Virginia. Using the Chandra X-ray satellite and the help of about thirty amateur astronomers, the team analyzed the object in detail. According to Nikola Antonov, who runs the private Meshtitsa Observatory in Bulgaria, the amateur astronomers played a key role by observing the object daily during a campaign in March 2026, while the Chandra satellite collected X-ray data. This collaborative effort allowed for a more comprehensive analysis of the event. What surprised the researchers was that AT 2016blu did not explode once but repeatedly—27 times in total. Each explosion occurred approximately every 113 days. This unusual pattern of repeated outbursts has led scientists to consider a possible explanation involving a companion star. They suspect that material from the companion star may be falling onto the main star, creating periodic explosions as the material accumulates and is suddenly released in bursts. The discovery of AT 2016blu highlights the importance of combining professional and amateur astronomical efforts to study rare and complex celestial phenomena. It also opens new questions about the mechanisms behind impostor supernovas and their potential connection to more common types of stellar explosions. Future observations and research will likely help clarify the role of companion stars in these events and deepen our understanding of how stars evolve and interact in binary systems.