Gauge for galaxies

Note : This recording contains 2 parts as part of the topic 'Studying Galaxies'.

Part 1 : Gauge for Galaxies (00:00:00 - 00:16:39)

Part 2 : Somethings about Dark Matter (00:16:39 - 1:06:34)

by Sharmistha Das

Unlike stellar properties, the properties of galaxies are not easy to find due to their extended shapes and absence of well defined edges. This talk briefly explains the various ways that astronomers use to measure these properties. Using few of these methods, we will then move on to the next phase for a better understanding .