These talks will be self-contained presentations of mathematical concepts and theorems. They are intended to be accessible to all mathematics students.

The German physician Wilhelm Olbers [1758-1840] was responsible for the discovery of the 2nd and 3rd largest asteroids of our Solar System. This pair includes Vesta, which is the brightest of all asteroids and is currently visible at night in the constellation of Virgo, very close to where it was first found. Olbers is also remembered for the paradox that bears his name: why is the night sky dark? Surely, Olbers argued, if the Universe contains a countless number of stars then any line of sight must eventually strike a star, so making every point in the Heavens `glisten like the Sun'. In this talk we discuss how Olbers' paradox was resolved. We also report several other important astronomical events that are taking place in this `merry month of May'.