If you get into a cadence of swishing, however, you can instigate a smooth, sinuous, motivated wave, which would surely buoy a rubber duckie outward through all space, time, and divinity if not for the walls of the tub.
Astronomers are pure of heart and appealing puerile. They look into the midnight sky and ask big questions, just as we did when we were in college: Who are we? Where do we come from? And why are we standing around outside on the night before finals?
(Normally, I'd never do a Teaser Tuesday on a textbook, but this one is too good not to share. I love Ms. Angier's writing style & sense of humour, plus I get to learn things at the same time.)