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And this one, yeah, it is seven. Out of the three, seven, eleven, and nineteen, it's actually seven. And the draft has a tremendous pressure, a tremendous pressure, blood pressure at its heart. But by the time it gets up to its head, it's low enough that it's not causing any neurological damage. And that's the only way a draft can efficiently get blood to its head. It has to have extremely high blood pressure near its heart. But seven, that's an ambulance. And what, the next one here, what is the term for a large cloud of gas where stars are born? A quasar, nebula, or a pulsar?