Galileo Gladius

The Galileo Gladius is a craftable post-Moon Lord shortsword. When swung, the weapon auto-fires homing crescent moons that deal 50% of the weapon's base damage and pass through blocks. Hitting an enemy with a true melee hit will cause large blue planetoids to rain on the enemy. These planetoids explode on contact with tiles and enemies.

Trivia

 * Galileo was known as the "Father of observational astronomy" due to his massive contributions to the field, which gave the weapon its space theme.
 * Gladius is the Latin word for "Sword", which is the most used language during the era Galileo was alive.