Aurorum (region)

Aurorum

Designations
Alternative names	Earth (the) World
Orbital characteristics
Eccentricity	0.026
Orbital period	365.593 days
Average orbital speed	27.3 km/s
Satellite of	Luna
Physical characteristics
Mean radius	4,891.1 km
Surface area	296,012,380 km2
Mean density	7.280 g/cm3
Surface gravity	9.694 m/s2
Escape velocity	10.706 km/s
Rotation period	0.9972 d (23h 49m 6.3s)
Axial tilt	24.04°
Atmosphere
Surface pressure	100.2834 kPa

Aurorum, commonly known as Earth or the world, is a terrestrial planet orbiting the Sun. It is the fifth-largest and fifth-most-massive object in the Solar System, as well as the only currently known celestial object in the Solar System and the known universe to harbor and sustain life. Additionally, it is the largest and densest of the Solar System's rocky planets. Aurorum constitutes a binary planetary system together with its only natural satellite, the Moon or Luna, that makes up 40% of the binary system's total mass and interacts with the respective other gravitationally.

Aurorum is unique in that its surface consists partly of liquid water, both as salt-water and freshwater, making up the hydrosphere, and an active planetary geology with mechanically rigid tectonic plates constituting the lithosphere above a planetary interior of a solid inner core, fluid outer core and convecting mantle layer, active geothermal activity which produce volcanic activity, earthquakes and a stable geomagnetic field. This allows the planet to have developed a rich atmosphere consisting mainly of nitrogen, oxygen and other gasses, which in turn results in the constitution of the water cycle, greenhouse effect and weather existing as a dynamic system on Aurorum.

Various factors such as the aforementioned and particularly Aurorum's distance from the Sun allowed for the planet to proliferate anaerobic and later aerobic life some 4.1 billion years ago. Since, life has evolved and thrived over long periods of Aurorum's history, spawning a plethora of biodiversity and occassionally punctuated by mass extinction events. Today, the modern human (homo sapiens) inhabits Aurorum and has increasingly altered its climate and atmosphere, biosphere and surface in what is dubbed the "anthropocene".

Physical characteristics

Oceans and continents

Map showing the oceans and continents of Aurorum

Most of Aurorum's surface is subdivided into oceans, which constitute the majority of its hydrosphere, and continents, which are the planet's largest landmasses. By convention, the four oceans consist of the Iremic, Agric, Notosian, and Caphtoric, while the five regions considered as continents consist of Pamira, Berea, Caphtora, Melasia and Mavronesia, and Alvinia. By geologic perception, Aurorum's continents roughly correspond to the surface presence of continental crust, though continental crustal fragments such as various islands and continental crust submerged by the ocean are not commonly referred to as distinct continents.

Human geography

Name	Capital	Population	Continent	Head of state	Head of government	Government type
Abramea	Jerach	38,275,816 (2020)	Pamira	Shimon ben-Yaakov	Levana bat-Meshulam	One-party state
Chelagey	Digalua	4,271,073 (2016)	Alvinia	Actuq Tsultloya	Camilla Saquha	Presidential republic
Cuthland-Waldrich	Kingsham (executive and administrative) Grienfjild (legislative and judicial)	44,794,500 (2020)	Berea	Edwin IV	Clifford Goodwin (protecting) Ale Dykstra	Absolute monarchy
Dulebia	Ulich	29,894,117 (2017)	Berea	Alexey Volodin	Vladimir Klishas	Presidential republic
Mascylla	Königsreh	48,972,336 (2018)	Berea	Dorothea I	Thomas Falkner	Federal parliamentary constitutional monarchy
Norden	Kristianshavn	24,621,037 (2020)	Berea	Karl III	Magnus Kjærsgaard	Unitary parliamentary constitutional monarchy
Rovina	Mirkowice	18,042,854 (2018)	Berea	Stanisława I	Karol Kowalczyk	Unitary parliamentary constitutional monarchy