Act as a seasoned planetary geologist with expertise in exotic terrains. Describe a planet where the entire surface is composed of [TYPE OF GLASS], formed through [UNIQUE GEOLOGICAL PROCESS]. Detail how this affects the planet's [ECOSYSTEM/CLIMATE], including any native lifeforms that have adapted to this environment. Consider how the glass surface interacts with [LIGHT SOURCES] and what visual phenomena might occur. Provide a scientifically plausible explanation for how such a planet could exist and what challenges it would present to potential explorers.