Stars Produce 35% More Titanium

Scientists have made significant progress in understanding how stars forge elements, with new research providing insights into supernova explosions and the creation of elements such as titanium-44. The research, conducted by scientists from the University of Surrey's Nuclear Physics Group and the Facility for Rare Isotope Beams (FRIB) in Michigan, has found that supernovas produce 35% more titanium-44 than expected.

The first paper looked at how stars forge elements as they explode, using a radioactive element produced by these explosions called titanium-44. Researchers collected experimental evidence that determines how much titanium-44 is created in a supernova, finding that these cosmic explosions produce more of this element than expected. This knowledge will allow scientists to develop robust computer models of supernovas and compare these models with astronomical observations.

The second paper focused on a particular brand of stellar explosion called a Type I supernova. These occur when a neutron star, which has one to two times the mass of the sun crammed into a body about 12 miles (20 kilometers) wide, drags material from a companion stellar body, triggering a thermonuclear explosion. Type I supernovas are an important area of study, as they can provide insights into the creation of heavy elements.

According to Christopher Cousins, a postdoctoral researcher, the measurement of titanium-44 production would have been considered out of reach only a couple of decades ago. The research provides new insight into one of the biggest unanswered questions in astrophysics, bringing scientists closer to understanding how stars forge the elements that comprise our planet and bodies.

## Why it matters The research has significant implications for our understanding of the universe and the elements that make up our planet and bodies. By understanding how stars forge elements, scientists can gain a clearer picture of where star explosions fit into the story of the universe. The creation of elements such as titanium-44 and heavy elements through supernova explosions is a complex process, and this research provides new insights into this process. As scientists continue to study supernovas and the creation of elements, they may finally be able to answer one of the biggest unanswered questions in astrophysics.