Andromeda: The Milky Way's Future Collision

1. Closest Spiral Galaxy: Andromeda is the nearest spiral galaxy to the Milky Way, located approximately 2.5 million light-years from Earth. 2. Bigger Than the Milky Way: It is about 220,000 light-years in diameter, making it larger than our galaxy. 3. Future Collision: Andromeda is on a collision course with the Milky Way and will merge with it in about 4 billion years, forming a new galaxy.