“ESA Calls It Rare”
In the history of the universe? How the Phoook would they know?
Is it as rare as breakthrough ChiComWuHu, or a different kind of rare?
Rare because not many of them have been seen so far. But program an AI to inspect and sort trillions of dots in billions of photos and you might be right, there could be an infinite amount of galaxy pairs like this in an infinite universe.