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M31, Andromeda Galaxy with it's dwarf companion m33 above.
The blob at the centre contains billions of stars, the milky extended shape a few billion more in a disc shape.
It's coming towards us, to mix and distort us and them beyond recognition. Thought it still 100M lightyears away. So the light in this image left Andromeda around the time dinosaurs were prancing about on Earth.
What we looking at?