Darth Vader arrives at the moon.
The Heinsnake Cult, a group of dark side sorcerers, made their home on a certain moon. The Basis was a device that allowed them to channel the moon's inherent power into a superlaser.
Following his extermination of the Heinsnake Cult for their failed assassination attempt against Emperor Palpatine, Darth Vader sealed the moon's fate by removing the Basis' power source. This act ensured the moon's eventual destruction.