Mr. B When I asked Mr. B about solar wind, he said there was no such thing, in front of the whole class. I was pretty sure he was wrong, and he was: solar wind is a stream of charged particles, mostly protons, released from the upper atmosphere of the sun and permeating the whole solar system. You can harness it, like these kids in a story I’d read about a regatta in space. Their sail unfurled for half a mile, glittering in the blackness. But I don’t blame Mr. B. The universe is vast and beautiful and full of…
