Messier Galaxies Andromeda M31 Romain Girard

Challenge of the Week: Messier Galaxies

  Unistellar Citizen Astronomers are invited to participate in this week’s special quest to observe galaxies from the Messier Catalogue, in preparation for our upcoming Messier Marathon! The Messier Catalogue is a set of 110 deep sky objects which includes galaxies, nebulae, and star clusters. The catalogue was published by French astronomer Charles Messier in…