Thomas Harriot's map of the whole Moon, made after looking through an early telescope. This image accurately depicts many lunar features including the principal Maria (lunar 'seas' - actually lava-filled basins) and craters. Labelled features include Mare Crisium ('18') on the right hand side and the craters Copernicus ('b') and Kepler ('c') in the upper left of the disk. Credit: © Lord Egremont
