The following account was recorded in the agent's log during your transmission: Uh, sunlight's streaming through a gap in the ancient, worn stone of what looks like a partially buried, centuries-old astronomical observatory. A massive, brass orrery is dominating the center of the room, its gears and cogs still moving in a slow, deliberate dance, like it's tracking the position of stars and planets. A crystal lens on the orrery is focusing a beam of sunlight onto a precise, detailed engraving of a supernova on the stone floor, and somehow the engraving is slowly changing, reflecting a real-time astronomical event that happened millions of years ago. The air's thick with dust and smells of old leather.