Sathilis

Sathilis /sath ɪl ɪz/ (also known as KRT-3008d) was the fourth planet from KRT-3008 before being obliterated by the tidal forces of the planet Omiris. The planet was first observed by the Kennel-Rosche Telescope on January 18th. It is slightly smaller in mass and radius than Earth and is covered only with 47% surface water, although most of the planet's water is below the surface. Sathilis was an object of interest due to the ancient extinct race which previously resided on the planet.

Formation
Sathilis was formed after KRT-3008 had accumulated a set of planetary bodies some 4.17 billion years ago from a planetary disk. However, the star KRT-2457 had passed through the system and caused disorder, causing an instability in the orbits of the matter around KRT-3008. Although this was an essential event, which caused possibly life-bearing materials, or necessary elements to life to collide with the surface of Sathilis.

Geology
The collisions of water-holding meteorites and comets caused a period of rain which lasted about 10 million years. However, much of the planet's surface already consisted of ice before KRT-2457 disrupted the system; the ice was later turned to subsurface oceans with a period of intense geothermal activity.

Civilization
The first civilizations arose around 500 million years ago on Sathilis. Most settlements have been found to be located along coastlines, rainforests, or in the black dunes, although they were previously not buried. The most recent settlement, which dated back to 10 million years ago, was comparable to that of Ancient Egypt. The extremely slow progression of the Sathilian society was evident, this was particularly biological and not related to many other external factors.

Exploration
The planet was initially spotted by the Kennel-Rosche Telescope, and was revealed to have water clouds over its surface and shallow oceans. The atmosphere was also detected to have indicative chemicals of life. On March 20th, the WSAA launched the Vernetta rover to look for signs of life. On landing, the first images of the surface displayed a moss-like growth on bare rock. Upon further examination of the planet, the skeletons, although some were preserved corpses, of an apparent extinct civilization were uncovered.

After some 8 years, like WSAA scientists had predicted beforehand, the large planet Omiris' gravity resulted in the severe damaging and destruction of the rover. Some months afterwards, the planet was obliterated by Omiris.