Alex Filipenko Supernovas and Timescales. Star Clusters. Galaxy Clusters. My guest Mr. Dave.

Hunting Supernovas. SN allows scientists to study something that is occuring on a timescale through which we can study the whole process. A SN might shine brightly for a few weeks, whereas if a solar system is forming, it might take millions of years to form, and we don't live for millions of years. Star Clusters - globular clusters and open clusters. Most if not all stars form in star clusters. NASA show how ingredients for water on the water can allows astronauts to make water on the moon.