Special Note: The following is speculation on the emergency plan known as the Xandar Restoration Protocols which were featured in New Warriors #40 - #42. The purpose of this theory is to resolve a few unfinished plotlines from Nova's continuity and tie together the events of the SuperNova Saga (Avengers #301-#303) and the StarLost Saga (New Warriors #40-#42).

These unresolved plotlines include:

1) What happened to Zorr's starship in Earth orbit? (The Man Called Nova #1)
2) How was Xandar able to fight off the Skrull Empire in the Xandar/Skrull War? (Fantastic Four #203-#209 & Rom #24)
3) Why did Zorr and Supernova's ships seem similar in design yet had a Xandarian influence (Fantastic Four #203 & Avengers #301)?
4) What was the purpose of Supernova's mission to Earth (Avengers #301-#303 & NW #40-#42)?
5) Given the level of his power, why did Supernova need a ship and why were physical brains on board (Avengers #301)?
6) What happened to the missing domed world of Xandar during Nebula's attack (Avengers #260 & New Warriors #40)?
7) Why would the protocols require the WorldMind to be left in Xandar's ruins (New Warriors #41-#42)?

These directives included:

A) Salvation of one of the domed worlds (the one housing the Living Computers).
B) A number of its citizens in order to continue the species.
C) The preservation of the Nova Force.

To achieve the first two goals, the Xandarians required a method to transport a city to safekeeping. Ironically, they decided to use a vessel which had nearly caused their original destruction; the Luphomoid starship of Zorr. After destroying the original Xandarian homeworld and being left empty in Earth orbit following Zorr's death (The Man Called Nova #1, Fantastic Four #203), the starship was retrieved by the Xandarians in the early days of their conflict with the Skrulls. A ship capable of planetary-scale destruction, along with the Nova Prime Starship, would have allowed a small world consisting of four domed cities to survive the assault of an empire (Fantastic Four #203-#209 & Rom #24).

However, if they were to face an even greater singular force, the starship would be large enough to take one of the domed cities to safety and powerful enough to provide it with protection and security. The Xandarians greatly modified the starship to be compatible with their technology and created a large circular docking port in the center to hold the domed city. The technological modifications would also allow the ship to hold the physical brains of the Living Computers and a large number of Xandarian citizens.

With the citizens and Living Computers safely stored on the starship, the entire Nova Force (minus a small sliver) would be given to a chosen Xandarian. It mostly likely would have been the Centurion Nova Prime who led the Nova Corps. The CNP would have been judged to be the strongest and most stable of the Xandarians and the Nova Corps to hold the enormous energy of the entire Nova Force. At the time, Adora's husband, Tanak Valt, was the Centurion Nova Prime following the surrender of the power by Richard Rider of Earth.

When Nebula arrived in Sanctuary II and attacked Xandar as revenge for her father Zorr's death (Avengers #260), the Protector and Adora activated the protocols. The domed world containing the physical brains of the Living Computers and the chosen citizens were moved into the starship with the citizens placed into suspended animation to save resources. However, Valt was killed alongside his allies in the Champions of Xandar soon after Nebula's attack began. With Valt dead, the choice was made to use Garthan Saal (either by random or he was second in line) as the recipient of the Nova Force. Saal may not have been properly prepared to receive the power or his mental condition wasn't as stable as Valt's. It was decided that Saal was acceptable since the Living Computers would be with him on the starship to keep him sane.

The one sliver of Nova Force not given to Saal had been given to Richard Rider of Earth albeit in a dormant state. Adora felt that Rider had embodied the spirit of Xandar and his location on Earth would ensure that the Nova Force would be secure. Before Nebula destroyed Xandar completely, Adora was able to send the sliver of Nova Force to Rider and she died soon afterwards (Nova: The Human Rocket #1). The protocols required the bearer of the Nova Force (Saal) to take the starship to Earth's solar system. Once the ship was safely in orbit, Saal would locate Rider and awaken his powers. With all of the Nova Force active on the same dimensional plane, Saal and Rider would merge forms and become the living embodiment of the Nova Force. It was decided that Rider (with the stronger will) would take conscious control of the Nova Force and use it to energize the domed city. The Xandarians would begin rebuilding Xandar on an uninhabited world somewhere in the universe.

However, the Nova Force was too much for Saal's mental state and he went insane from the power (Avengers #301-#303). Saal (now called Supernova) chose to pursue Nebula in order to gain revenge. The Living Computers attempted to control and protect Supernova until they could get to Earth but failed. Following a battle with the Avengers, Saal lost complete control and destroyed the starship in an enormous gravimetric pulse (Avengers #301).