Dark matter might not need to be made of tiny, lightweight axions after all. This paper shows that much heavier axions, once thought too unstable, could survive to the present day and account for dark matter. Axions, hypothetical particles that barely interact with light, are a primary candidate for dark matter. Scientists believed axions had to be very light, since heavier ones would decay too quickly into photons and disappear. Our new study challenges this view. We propose a new force, similar to the one that forges protons, able to hold together "dark gluons" into stable clumps called glueballs.