Clavius

When Æon finally gets to the literal bottom of Goodchild’s plan, penetrating his secret bunker inside Clavius’ body, she scoffs: “I thought you had an operation here. I thought you were getting some work done. Where is the smoke-filled room? Where are the sleazy characters?”

A couple of years ago, NASA’s Stratospheric Observatory for Infrared Astronomy detected water molecules in the Clavius Crater, one of the largest lunar craters visible from Earth.

However, demand was fully re-established in the decade 1600-1609, and not just for the new more complex commentaries such as that of Clavius, published in fat quartos, but also for cheap octavo editions.

Clavius by this time was very ill, and we do not know what he made of this new evidence.

Clavius and Kepler will have had no difficulty confirming immediately that Venus had phases: all they had to do was point a decent telescope in the right direction.