|How do we know how massive a star is? Or how old it is? Or how fast it is moving? How massive is our Milky Way Galaxy? How old is the Universe? Most parts of the Universe are too far away to reach in person or even with space probes. To answer these questions we have to rely on messages emitted by the objects we wish to study. These messages are, of course, in the form of light. In this lab we are going to study the light we receive from stars.|
The purpose of this lab is to allow you to gain a better understanding of how astronomers determine what astronomical objects are like. An example would be the temperature and density inside a nebula or at the surface of a star. The specific technique you will learn about is called "atomic spectroscopy". You will apply this technique to learn about the physical conditions in various astronomical objects.