Geological Chronicle
Galois is a large crater on the Moon’s far side and dates to the Pre-Nectarian period. It lies southeast of the walled plain Korolev, whose diameter is nearly twice Galois’s. Apollo lies several hundred kilometers due south. The crater is named for French mathematician Évariste Galois.
Impacts have heavily eroded Galois and reshaped its rim, especially on the northwest edge near Korolev. An influx of material forms an inward bulge along the southern edge, which has also been impacted by Galois Q. Galois A and Galois L form a nearly matching pair near the floor’s midpoint. The most intact, nearly level section of floor lies in the southwest.
An unnamed crater on the northeastern rim has a relatively high albedo and lies at the focus of a small ray system. Its rays are most prominent to the north, crossing Mechnikov’s floor. Ray systems are considered indicative of a relatively recent impact because space weathering steadily erases them.