New Delhi [India], February 09: The phrase “lunar ring” sounds like something a marketing department would invent after a late lunch, but the geometry is embarrassingly straightforward. The Moon is tidally locked, its equator running in a patient circle of dust and rock that hasn’t felt wind in four billion years. Put solar panels along that belt and, because of the Moon’s slow, stately rotation, some part of that belt will almost always be in sunlight. Not all of it. Not cleanly. But enough. The idea is to turn that accident of…
