Summary:

- This article discusses the discovery of a new type of supernova, called a "calcium-rich transient," which is a rare and unusual type of stellar explosion.
- Researchers have found that these calcium-rich transients are produced by the merger of a white dwarf star with a neutron star or another white dwarf, rather than the traditional core collapse of a massive star.
- The study of these events provides insights into the physics of stellar evolution and the formation of heavy elements in the universe, as calcium-rich transients are thought to be a significant source of calcium in the cosmos.