What is the second-biggest galaxy in the Local Group, with a star disk of about 170,000-200,000 light-years in diameter?

Our very own Milky Way is the second biggest galaxy in the Local Group after the Andromeda Galaxy, with a star disk diameter of about 170,000-200,000 light-years. The Milky Way has a mass of between 890 billion and 1.54 trillion times the mass of the Sun.

Asked by Vasilii Kulev · Last updated 4 years ago · 881 views · SOURCE