Class E Planet

Class-E planets represent the earliest stage in the evolution of a habitable planet. The core and crust is completely molten, making the planets susceptible to solar winds and radiation and subject to extremely high surface temperatures. The atmosphere is very thin, composed of hydrogen and helium. As the surface cools, the core and crust begin to harden, and the planet evolves into a Class-F world.

https://memory-gamma.fandom.com/wiki/Planetary_classification#Class-E_(Geoplastic)

Type

Planet