What is the approximate diameter, in light-years, estimated for the Andromeda Galaxy (M31)?
Answer
220,000 light-years
The Andromeda Galaxy, also referred to as M31, possesses a larger physical size compared to the Milky Way. Specifically, its diameter is estimated to measure around 220,000 light-years across. This measurement contrasts with the Milky Way's estimated diameter of roughly 100,000 light-years and the Triangulum Galaxy's smaller diameter of approximately 60,000 light-years. The figure of 10 million light-years pertains to the approximate total span of the entire Local Group structure, not the diameter of an individual galaxy.
#Videos
What Is The Local Group In Astronomy? - Physics Frontier - YouTube
Related Questions
Which two galaxies are identified as the dominant members of the Local Group?What is the approximate diameter, in light-years, estimated for the Andromeda Galaxy (M31)?At what speed is the Andromeda Galaxy currently approaching the Milky Way relative to us?What is the estimated number of stars contained within the Andromeda Galaxy?What celestial structure contains the Virgo Supercluster as a component?What phenomenon dictates the orbits of members within the Local Group, despite their unseen nature?In approximately how many years is the collision between the Milky Way and Andromeda predicted to occur?What classification is given to the Local Group when considering its value for studying galaxy evolution?What is the approximate span across the entire Local Group in light-years?What is the name of the Hawaiian-derived term for the supercluster containing the Virgo Supercluster?What type of galaxies primarily comprise the lesser, fainter members scattered throughout the Local Group?