Liquid Erchius Fuel

Liquid Erchius Fuel is a vanilla fuel for ships. It can be mined on Moons, but carrying it in the inventory will make you targeted by Erchius Ghost.

It is extremely convenient for fueling the ship in early game, but later it becomes outclassed by cheaper and more potent types of fuel, as well as fuel that doesn't need to be actively mined. It also can't be used to power either Fission Reactor or Quantum Reactor.

There is an approximately 5% chance of a Gas Giant world to have a core ocean (infinite quantity of liquid) with Liquid Erchius Fuel.