In recent years, whenever astronomers have gazed into the night sky, they’ve noticed something peculiar: Some of its massive stars—the true titans of the cosmos—appear to be missing. The largest of ...

Astrophysicists have observed layers of helium, carbon, and oxygen in exploding stars before, which are visible after the star has ejected its outer layer of hydrogen. By observing the silicon, sulfur ...

Scientists have for the first time peered inside a dying star as it exploded in a supernova, gaining not just unprecedented views of its layers, but more so, insight into the process of stellar ...