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

The existence of the Crab Nebula, supernova remnants, the presence of heavy radioactive elements in nature, and observations of actual supernova explosions are all evidence that supernovae really have occurred. The Crab Nebula is a remnant of a supernova explosion that was observed in 1054 AD, and studies of other supernova remnants can reveal the elements produced in the explosions. The presence of heavy elements such as gold, platinum, and uranium in nature can also be traced back to supernova explosions. Finally, observations of supernova explosions have been made both historically and with modern telescopes. All of the listed options are evidence of supernovae occurring. The Crab Nebula is the remnant of a supernova that was observed in 1054. Supernova remnants are the leftover debris that results from the explosion of a star. The existence of heavy radioactive elements in nature, such as gold and uranium, can only be produced in the extreme conditions of a supernova explosion. While we have not observed an actual supernova explosion in real-time, we have observed the aftermath and remnants of such explosions in our universe.

What Evidence Is There That Supernovae Really Have Occurred