Ma Nova

Ma Novawas a planet created in the Sith Era or 37,000 BBY, to hold as home for the specially talented race of the Nova's and the ordinary but different race of the Nona; created by Nurnen the Super Ultra.

History
Nurnen the Super Ultra was a powerful being and the Sith knew of his powers and the hunted him to dilute him, he fled to the Outer Rim where he established and created a planet for him and his people. He called them there and they dwelt there for many years and hid until the Mandalorians found them. With the Mandalorians were: Nathaniel Walker Kryze and his brother Vilya, Uldor Saxon and his son Melak, Bernia Wren and her husband Retro. They found them during Sandor the Ultra's time as being the Ultra Nova, and he gave Nathaniel and Vilya immortality because he loved them best. He said to them:

"Do not tell anyone of this until the time is right and you will know when it is."

They hid this fact until the Imperial Era after the Republic had fallen and then attracted the attention on the Mandalorian People.

Behind the scenes
The Mandalorians other than the Kryze brothers died on Ma Nova under siege by the Nona, for they believed that the Mandalorians might get them chased from Ma Nova and forced to flee to the Sith's aid. The Nona did not see in them the power of Ultra Nova that they received and were killed upon their attack.