What type of stars will eventually become
white dwarfs?
neutron stars?
black holes?
what will be the ultimate fate of the sun?
why do stars form in groups instead of alone? suppose a cluster of stars formed 3 million years ago. why would you expect the h-r diagram of the cluster to show no stars on either the very high-mass end of the main sequence or its very low-mass end?
calculate and compare the distance of two stars (absolute magnitude of -2) with apparent magnitudes of 6 and 12, respectively.