It's about 9.9 × 10-30 grams per cubic cm, which comes to about 1 hydrogen atom per every 4 cubic yards.

We couldn't hit anything if we tried!

Well, we did manage the Moon, Mars, Venus, and a few other bodies in our neck of the woods, including a tiny, speeding comet. I'll bet the guy who aimed that one was from Kentucky...

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I am Mugs, of the Alien clan of Usa, Nordamerica, a Terran, of Sol.

Mine: "Perception isn't reality. It's merely an abstraction thereof, and quite often not a very good one at that."

Heinlein's: "Staying young requires the unceasing cultivation of the ability to unlearn old falsehoods." "Freedom begins when you tell Ms. Grundy to go fly a kite."