Nova Cronum

Nova Cronum is a philosophical haven and home to many theoretical research facilities. It borders Iacon and Polyhex and might be the region housing the Thunderhead Pass. Unfortunately, the Autobots and the Decepticons have a tendency to blow it up. Thus, it longs for the day when all are one.

Dreamwave Generation One continuity
Nova Cronum was purged by the Decepticons in ano-cycle 6-1-1, 500.000 years after the start of the war,  rendering it a ghost state. During the Border Wars, Shockwave used it as the location to build a new upgraded type of mobile base. Prowl and several of his soldiers went out to investigate the matter, coincidentally getting into a fight with the Decepticons' latest recruit. The battle did not quite proceed in the Autobots' favor, not even when two batches of reinforcements came to help. Fortunately for them, Shockwave needed Trypticon's assistance immediately in the Neutral Territories, who cut off the fight to respond to the order.
 * Locations
 * The Praetorus Wharf

Roughly 2.5 million years later, Nova Cronum, as war reclamation zone, was mostly rebuilt. A small team under command of Nightbeat went there in order to capture one of the Aerospace Extermination Squadron functioning for study. Thanks to the risks taken by Getaway and some quick thinking, they were successful in their mission.

IDW Generation 1 continuity
Skids hailed from Nova Cronum. After the Calabi-Yau was destroyed, Afterburner and Nosecone's escape pod crashed in the remains of Nova Cronum. They were attacked by Centurion drones, and would not have gotten out alive if not for their rescue at the hands of Roadbuster, Whirl and Topspin.

Regeneration One
Millions of years before the war began, Tallus, Decanus, Rokan, Boltax and Tribune Jhiaxus met at Nova Cronum to unite their minds and share their wisdom to create a vast repository of knowledge called the Underbase. However Jhiaxus had other plans and once their minds were merged he "killed" the others in the virtual mindscape, plundered the Underbase's secrets for himself and deleted all his own records, allowing him to disappear from history completely.

Live-action film series continuity
Nova Cronum is surrounded by the area where the Chamber of the Ancients is located, Central City, Tyger Pax, the Praetorus Wharf, and the area where the Stella Galleries can be found.

Exodus
Furious with the stalemate at Praxus, Megatron sent his forces into Nova Cronum to kill anyone who would not defect to the Decepticons, turning Cybertron's cradle of intellect into a ruin.

Merchandise

 * RISK TRANSFORMERS CYBERTRON Battle Edition (2007)
 * Nova Cronum is one of the green zones on the board.