Chris and Mr Max are out under autumn skies. Chris talks about the special stars of the Great Square of Pegasus, which is not Great or even a square. We wonder if the Moon illusion applies to flying horses, while Mr Max deals with the students of Oxford by choosing to stroll down the middle of the street. You can read about counting stars in the square here: https://skyandtelescope.org/astronomy-blogs/explore-night-bob-king/counting-stars-great-square-pegasus/ Find out about the astounding discovery of 51 Pegasi b here: https://astrobites.org/2019/10/16/the-nobel-winning-discovery-of-51-pegasi-b/ ...and don't forget to catch Mr Max on this month's @bbcstargazing Sky at Night special: https://www.bbc.co.uk/iplayer/episodes/b006mk7h/the-sky-at-night