Astronomy day: Galaxies and the expanding Universe

What is the evidence for the Big Bang? Is our Milky Way a typical galaxy? Will the Universe continue to expand forever? Our third Astronomy Day begins by exploring the properties of galaxies, and comparing our own galaxy to some more distant and exotic examples. We will then consider the evidence for an expanding Universe and explore what this implies for its past history and eventual fate. No previous astronomy experience is needed, and each Astronomy Day is self-contained so you are welcome to attend one or several.