Decades of searching in the Andromeda Galaxy has finally paid off, with the discovery of an elusive breed of stellar corpse — a neutron star, by ESA’s XMM-Newton space telescope. Neutron stars are the small and extraordinarily dense remains of a once-massive star that exploded as a powerful supernova at the end of its natural life.
In a Hubble Space Telescope survey of 2,753 young, blue star clusters in the neighbouring Andromeda Galaxy (M31), astronomers have found that M31 and our own galaxy have a similar percentage of newborn stars based on mass. The intensive survey was a unique collaboration between astronomers and “citizen scientists,” volunteers who provided invaluable help in analysing the mountain of data from Hubble.
Are you looking for something to whet your observing appetite and celebrate the return of late summer dark skies to the British Isles? Why not welcome back the Andromeda Galaxy to the Northern Hemisphere night sky in this observing guide to one of the annual harbingers of autumnal celestial delights.