What is "transilvane"

Transilvane is a fictional small artificial planet with two horn-like protuberances in the . It was created by Jack Kirby in Superman's Pal Jimmy Olsen #142 and #143 (October–November 1971).

Transilvane's official name was E.T.A.S. ( Extraterrestrial Artificial Simulation). It was created at the behest of NASA to simulate and study extraterrestrial environments, with an eye towards long-term human colonization. When the project ran out of government funding, Dabney Donovan seeded the planet with miniature lifeforms and used orbiting Movie projectors to project horror films on the planet's clouds. As a result, the Transilvanians assumed the shapes and habits of classic horror film monsters.

Donovan was eventually planning to wipe Transilvane clean, using a robotic "Demon Dog" to spray it with a poison gas. To stop him, several Transilvanians, led by the vampire Count Dragorin and the werewolf Lupek, came to Earth in coffin-shaped, size-altering spacecraft. They failed to find Donovan, but Superman, assisted by Jimmy Olsen, destroyed the Demon Dog and saved Transilvane.

The story ended with Superman having decided to reprogram the Transilvanians by replacing the horror movies with projections of Oklahoma!.