1. Why are supernovae so rare? Why are they so pivotal to our existence? Why don’t we have to worry about the death by supernova? Supernovae are rare because on an average they occur every two to three hundred years and are hard to find due to the small numbers of galaxies. They are pivotal to our existence because when one explodes, it releases a vast amount of energy creating a cycle of new stars. We don’t have to worry about the death of a supernova because it is too far to reach us. 2. How did the pursuit of alchemy slow the progress of chemistry as a science? How did
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 03/11/2010 for the course GE CLU 70a taught by Professor Tony during the Spring '10 term at UCLA.