Things To DoNight Sky at RSPB Old MoorMarch 17 – 4.30-8.30pm: learn about the night sky and take a dusk walk around the reserve with volunteer guides and Mexborough and Swinton Astronomical Society.By Antony ClayPublished 15th Mar 2018, 09:52 BSTUpdated 15th Mar 2018, 09:53 BST Related topics:Mexborough