In the vast darkness of space, stars are rarely born alone. They usually form in groups inside enormous clouds of gas and dust called molecular clouds. Some of these groups are small and short-lived, while others become gigantic, tightly packed systems containing millions of stars. These ancient systems are known as globular clusters, and they are among the oldest objects in the Universe. For decades, astronomers have struggled to answer one major question: how did these massive star clusters form? Many scientists believed that globular clusters required rare or “extreme” conditions found only in the early Universe. Some theories suggested violent galaxy collisions, unusual environments, or exotic physical processes were necessary to create them. But new research is changing that idea completely. Scientists Howard, Pudritz, and Harris used advanced radiation-hydrodynamic simulations to study how giant star clusters form inside massive molecular clouds. Their findings suggest something ...