Hello Everyone,
This is my first post.
Eventually we need to consider the following type of planets and astronomical objects to be part of the game to make it realistic.
Stars:
Main sequence stars of spectral classes O,B,A,F,G,K,M and there various sub-groups, e.g. G2V (like our sun) ans sub-sub groups like G2.6 V
Brown Dwarfs of L,T and Y and their sub groups.
Red Giants (spectral class III)
Sub Giants (sprectral class IV)
Sub Dwarfs (spectal class VI)
Wolf-Rayet Stars
Carbon Stars
White Dwarfs (and their different spectral classes)
Neutron Stars (Pulsars, Magnetars)
Quark and Exotic Matter Stars
Black Holes (and their subtypes, Kerr-Black Hole, Stellar, Supermassive, etc.)
Planets and other bodies by size:
Asteroid > 1m diameter but below the hydrostatic minimum where they become round
Dwarf Planet > below the mass of about the moon
Small selena planets (moon or larger up to the size of Mars)
Small terrestrial planets (Mars to Earth size, like Venus in size)
Large terrestrial planets (Earth to about 3 Earth Mass planets)
Super Earths (3-9 times the mass of earth
Small Neptunes (10-20 times the size of Earth, either gaseous planets with small cores or solid surface with very thick atmosphereres)
Neptune Sized planets (about 0.5-2 times the size of Neptune
Saturnian size planets (in the range of Uranus and Saturn or a bit larger)
Jovian sized planets (Jupiter and larger to the threshold where they become Brown Dwarfs)
Distance to their star:
Scorced, hot, warm, temperate, cold, icy, frozen (warm, temperate and cold in the goldilocks zone)
Thickness of the atmosphere:
non existant to as heavy as jovian planets atmospheres
Gravity:
from objects the size of a small asteroid to something needed to create supermassive black holes (gravity coudl depend regarding the elements and density a planet is made off)
Surface properties:
Land, sea, flat ocean, deep ocean, only ocean, molten rock, other configuarations (e.g. on Titan or "frozen floating ice" such as in Interstellar)
Other factors could also be the axial tilt creating seasons, orbital parameters (circular or eliptical), bound rotation or turning, efect(s) of moon(s) on the planet, etc.
Moreover we need other astronomical objects such as interstellar nebulae.
The team should also include some "unforseen" objects such as ripped space-time, natural wormholes and smaller sub universes spawning off the main one with different physical properties.
Would be cool to add.
The program Space Engine would provide a good reference for the developers in which direction to head regarding the scientific accuracy of the Dual Universe.
Good luck with the creation of the game...
