Greydowns

Greydowns was a gas giant under the control of the UNSC.

History
Sometime during the Human-Covenant war before the Fall of Reach Greydowns was lost to the Covenant Fleet of Particular Justice, commanded by Supreme Commander Thel 'Vadamee.

Trivia

 * The planet looks very similar to Jupiter, the largest planet in the Sol system.

Appearances

 * Halo 2: Anniversary
 * Terminal 3 - Particular Justice