Exploring the Night Sky with Hubble’s Caldwell Catalog por admin | 30 diciembre, 2019 - 12:13 pm |30 diciembre, 2019 Astronomy Photos Exploring the Night Sky with Hubble’s Caldwell Catalog This loose collections of stars, known as an open star cluster, is image 100 of the Caldwell catalog. Get The Details… Powered by WPeMatico Spread the love Etiquetado Astronomy photo.Enlace para bookmark : Enlace permanente.