Can you imagine seeing an explosion in space, more or less similar to a supernova, which is when a star dies in a spectacular way? Well, in fact, at that moment, new elements are created, like those that make up our planet or even our own body. Now, the interesting thing is that in this incredible process, small particles called neutrinos play a very important role. Neutrinos are very small and almost invisible subatomic particles that go unnoticed by most things, but in these extreme events, they have a much more important role than previously thought. When a supernova occurs, the core of the star collapses and huge amounts of neutrinos are generated. These particles begin to move through the matter around them, and although they normally do not interact much with other things, in these intense environments, neutrinos begin to do interesting things. One of the most intriguing phenomena is what is called collective flavor oscillations. Basically, it's as if neutrinos change shape as they travel. This is important because these oscillations can influence how elements are formed. Collective neutrino oscillations change the ratio of protons to neutrons (the building blocks of atoms), which in turn affects what kind of elements are created during the supernova explosion. A recent discovery, called the "νi-process," shows that neutrinos can trigger neutron capture in a very special way, creating unique combinations of atoms. This process is especially important in situations where there are many more positively charged particles (protons) than negative ones, and where the energy is very high, such as at certain stages of a supernova. What makes this even more interesting is the fact that scientists have realized that collective oscillations are more complex than we thought. Until recently, models trying to explain how neutrinos behave used a simplified approach. But recent research has shown that if we take into account more complicated effects, such as quantum correlation between several neutrinos, the result can be quite different. It is as if changing one ingredient in the recipe would make the final dish taste completely different.