What evidence is there that supernovae really have occurred?
A) Crab Nebula
B) supernova remnants
C) existence of heavy radioactive elements in nature
D) observations of the actual explosions
E) All of the above.

Question

Quizplus · Accepted Answer

All of the above options provide evidence for the occurrence of supernovae. The Crab Nebula was formed in a supernova explosion, which is evident from its properties and observations. Supernova remnants are also strong indicators of past supernova events. The existence of heavy radioactive elements, such as gold and platinum, in nature can only be explained by supernova nucleosynthesis. While direct observation of supernova explosions is rare, there have been documented observations of supernova events in other galaxies.

What Evidence Is There That Supernovae Really Have Occurred