M31 You’ve not voyaged far to reach our nearest, and most impressive, spiral galaxy, Messier 31 - or best known as the Andromeda Galaxy. Located in the (shocking surprise) Andromeda Constellation, it is by far the largest galaxy in our Local Group with around 1 trillion stars! With a not-too-far away distance of around 2.5 million light years, it's no surprise that our galaxy and Andromeda are expected to collide in a mere 3.75 billion years, merging to form a giant elliptical galaxy.
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