Lucifer

Lucifer, also known as CelWP G8 b, is a tidally heated planet orbiting around the white dwarf Cassiel, and is around 1.1 times the mass of Earth. It was added in Release 8, and albeit solitary, it also hosts an large and extensive tail.

Characteristics
Lucifer is one of the most extreme and deadly planets in the entire galaxy. Not only is it subject to extreme tides from Cassiel, but it also has its orbit shortened by the same tides (via tidal decay), orbital decay from the dust in the Young Angel Nebula supernova remnant, Kozai-Lidov mechanism effects, etc. In addition, the planet's surface is being blasted away by Cassiel's winds, creating a vast, cone-like tail of ejected materials. This exposes a colder surface, which itself is blasted awway, causing intense mass loss. The temperature varies between 2500 K (star-facing side, coldest parts of the exposed surface) and 6500 K (hottest parts of the far side), which shows a process of rejuvenation of the craterless surface.