Celestial Objects

Every celestial body (entity) in Spaceies' Universe has different properties and is governed by different rules depending on the specific objects' classification. In case of celestial bodies that classification is determined by their size and composition. All celestial bodies have

* Core - affects objects mass, gravity
* Crust - affects objects mass, gravity
* Surface -
* Atmosphere - d
* Orbit -

Location

* Intergalactic
* Interstellar
* Interplanetary
* Circumplanetary

## Object Classifications

* Asteroid -
* Comets - nsisting of a central mass surrounded by an envelope of dust and gas that may form a tail that streams away from the sun.” *Comets* consist mostly of ice, dust, and some rocky bits—they are sometimes nicknamed “dirty snowballs” for this reason.
* Moon -

* Meteor - enters atmosphere of another celestial body
* Meteorite - when it survives

### Moons

Moons are A natural satellite is in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small solar system body (or sometimes another natural satellite). While natural satellites are often colloquially referred to as moons, there is only the Moon of Earth.

### Planets

* Rouge Planets
* terrestrial
	+ Silicate planet -The standard type of terrestrial planet seen in the Solar System, made primarily of silicon-based rocky mantle with a metallic (iron) core.
	+ Carbon planet (also called "diamond planet")
	+ A theoretical class of planets, composed of a metal core surrounded by primarily carbon-based minerals. They may be considered a type of terrestrial planet if the metal content dominates.
* dwarfs and giants

Iron planet
A theoretical type of terrestrial planet that consists almost entirely of iron and therefore has a greater density and a smaller radius than other terrestrial planets of comparable mass. Mercury in the Solar System has a metallic core equal to 60–70% of its planetary mass, and is sometimes called an iron planet, though its surface is made of silicates and is iron-poor. Iron planets are thought to form in the high-temperature regions close to a star, like Mercury, and if the protoplanetary disk is rich in iron.
Icy planet
A type of terrestrial planet with an icy surface of volatiles. The Solar System contains no known icy planets under the dynamical definition, but does under the geophysical definition
most planetary-mass moons (such as Titan and Enceladus) and many dwarf planets (such as Pluto and Eris) have such a composition. (Europa is sometimes considered an icy planet due to its surface ice, but its higher density indicates that its interior is mostly rocky.) Such planets can have internal saltwater oceans and cryovolcanoes erupting liquid water (i.e. an internal hydrosphere, like Europa or Enceladus); they can have an atmosphere and hydrosphere made from methane or nitrogen (like Titan). A metallic core is possible, as exists on Ganymede.
#### Coreless planet

A theoretical type of terrestrial planet that consists of silicate rock but has no metallic core, i.e. the opposite of an iron planet. Although the Solar System contains no coreless planets, chondrite asteroids and meteorites are common in the Solar System. Coreless planets are thought to form farther from the star where volatile oxidizing material is more common.
### Stars

A star is an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity. Stars can form orbital systems with other astronomical objects, as in the case of planetary systems and star systems with two or more stars. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution. Stars can form part of a much larger gravitationally bound structure, such as a star cluster or a galaxy.

## Groupings

* system
	+ planet
	+ star
	+ spec
* cluster
* galaxy
* sector/constalation