New type of supernova spotted

Theory becomes reality as astronomers observe an electron capture supernova, more than 40 years after it was first predicted.

Supernova 2018zd, marked with a white circle on the outskirts of galaxy NGC2146, is the first example of a new, third type of supernova predicted 40 years ago. Composite image with data from the Hubble Space Telescope, Las Cumbres Observatory and other sources. Credit: Joseph Depasquale, STScI