Hubble's Andromeda Survey Unveils Galaxy's Turbulent History
NASA's Hubble Space Telescope has completed its most detailed survey of the Andromeda galaxy, uncovering a tumultuous history filled with cosmic collisions. By combining the PHAT and PHAST programs, researchers have documented over 200 million stars, revealing Andromeda's complex evolutionary tale. This survey challenges the calm evolutionary narrative of our Milky Way, showing signs of dramatic past mergers.
Jan 18