Malhiem
From Halopedia, the Halo wiki
Template:Ratings Malhiem was a rather small moon in orbit around the Covenant colony world Joyous Exultation in the Salia System.
It was utterly destroyed when a NOVA Bomb carried by the Sublime Transcendence was activated. It was described as if "The tiny nearby moon Malhiem cracked and shattered into a billion rocky fragments and clouds of dust.</ref>
Sources
Halo: Ghosts of Onyx, page 245</ref>