Sir Patrick Moore has picked his 55 favourite night sky objects and, over the month of April, would like you to see as many as you can. The Moore Marathon will help celebrate 55 years of The Sky at Night, which was first broadcast on 24th April 1957.
From the Moon to the star Albireo, the Moore Marathon has something for everyone. You can spot some with your eyes, others need binoculars or a telescope, and you can take part on your own or as a group.
On 6 May on BBC One, and 10 May on BBC Four, The Sky at Night will feature a selection of your observations, from the simple to the most interesting. You can take part by downloading a Moore Marathon observing form. There are two types, The Quick Observing Form or The Detailed Observing Form. To get either, just click on the buttons below.