Solar System

The Solar System, also known as the Harshid System, is the planetary system that gravitally bounds together Harshid and the objects that orbit it directly or indirectly.

At the present day, about 99% of the mass of the Solar System is in Harshid and most of the remaining mass is concentrated in the six major planets whose orbits are nearly circular and transit within a nearly flat disc called the ecliptic plane. They are, in order of distance from the star: Tamid, the smallest and hottest planet, Umarayū, the second-smallest planet, Irhan, the biggest planet in the whole Harshid system, Menarr, the second-biggest planet in the Solar System, and Idaios, considered a double-planet system because of the size of its moon, Nemestes. Out of them, Tamid, Umarayū, Idaios, and Nemestes are rocky planets, composed mostly of rock and metal. At the same time, Irhan and Menarr are gas giants, composed mostly of helium, hydrogen, water, ammonia, and methane. Both are surrounded by rings, dust, ice, moons (most notably Zamin, where humanity comes from, and Yatim), and moonlets. Between Irhan and Menarr exists a large asteroid belt, where the minor bodies of Hedea and 99961 Imaras exist. Beyond Idaios exists a second asteroid belt named the Frontier Belt, the fuzzy disc, and a debris belt, named the Outer Cloud. The solar wind, a flux of plasma generated by Harshid, creates a bubble in the interstellar medium known as the heliosphere that extends to the fuzzy disc. The Outer Cloud, which is believed where long-period comets come from, marks the limits of the Solar System, this frontier extending to one light year away from Harshid. Objects located within this area are mostly composed of water, ammonia, and methane. There exist six dwarf planets: Lanaia, Gnocion, Kurkye, Itiri, Adorth, and Xenoph, the last being of particular interest as it has a minor moon that possesses rings. These bodies are big enough to be rounded because of their gravity, but can't be classified as planets as they differ mainly in that they have not emptied their orbit of neighbouring bodies. Additionally to the millions of small objects of the outer area, some of which are candidates to become dwarf planets, are found comets, centaurs, and cosmic dust, all of whom travel freely between regions.

Harshid is the only known body to emit its own light thanks to the thermonuclear fusion of hydrogen and its transformation to helium in its core. However, it's debated if to include Tamid in this classification, as it still has visible and active lava lakes across its surface believed to be this way due to a recent big collision event. The Solar System formed 5200 million years ago because of the collapse of a molecular cloud. The residual material gave rise to a circumstellar protoplanetary disc in which the physical processes that led to the formation of the planets and Harshid took place. Currently, the Harshid System is located in Local Star Group, part of the Interstellar Realm, inside the Celestial Arm of the Simarvi SBb spiral galaxy, 24600 light years from its center. The closest star to Harshid is Maetorix, a G-type double-star system located 3.07 ly away.