Type Ia supernovae originate in binary star systems—systems where two stars orbit each other. In one possible scenario, there are two stars approximately the same size—let's say about the size ...

Designated SN 2023adsy, the newfound stellar explosion is the most distant Type Ia supernova so far detected. The finding was detailed in a research paper published June 7 on the pre-print server ...

This white dwarf collision will trigger a specific type of supernova called type 1a that always produces the same amount of light. Astronomers can tell how far away each type 1a supernova is by ...

Such core-collapse supernovae are responsible for producing the cosmos’ predominantly lighter metals --- from oxygen to silicon and sulfur. In contrast, so-called Type 1a supernovae are ...

And when they did find the remnant, it looked weird. The supernova appeared to be a kind called type 1a, wherein a white dwarf star detonates, destroying itself in the process (SN: 3/23/16).