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From the article: "The nine dimensional haystack is a model used to quantify the parameter space Earth observers must pick through to rule out the existence of signals originating from extraterrestrial civilizations."

The image at head of page is of the well-known Wow! signal: https://en.wikipedia.org/wiki/Wow!_signal

> Instead of defining space by number of stars searched, we have opted to define space by three spatial dimensions: distance away and solid angle on the sky.

Seems like this really explodes the space. Recall:

> Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.