Closest Spiral Galaxy: Andromeda is the closest spiral galaxy to the Milky Way, about 2.537 million light-years away.
Collision Course: It is on a collision course with the Milky Way and will merge with it in about 4 billion years.
Low Star Formation: Despite its size, Andromeda has a low rate of star formation compared to similar galaxies.
Diverse Star Population: Andromeda hosts a variety of stars, including young blue stars and older yellow stars.
Massive Halo: It is surrounded by a vast halo of hot gas and dark matter, providing insights into its history and future evolution.
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