Star Classification

There are plenty of stars out there in the universe and there are many different types. Some are suitable for life, some are not.
Image	Type 	Have Habitable Planets	Description
 	Class D 	Very Little 	White Dwarfs are white suns that are in the final stages of their life cycle that is around the size of Earth (more or less) with temperatures ranging from 8,000 to 40,000 Kelvin yet will become a Black Dwarf soon once all its fuel is exhausted. The planets orbiting around the white dwarf are ancient with very little life to them.
 	Class A 	Yes 	They are young stars with extremely high luminosity along with temperatures ranging from 7,500 to 10,000 Kelvin. They are the second most common type of star in the night sky due to their bright luminosity. They have shorter lifetime along with strong solar winds and have a large habitable zone. Seasons orbiting these stars last for a year in Earth time due to the size of the planet's orbit.
 	Class B 	No 	These stars are the most common type of stars seen in the night sky due to their high luminosity with extremely high UV output that generate more blue lights and less red lights. Their temperatures range from 10,000 to 30,000 Kelvin. These form of stars do have a gigantic habitable zone but you need more than an ozone against these stars no matter how thick.
 	Class F 	Yes 	They are white or yellow-white colored stars with powerful solar winds and temperatures ranging from 6,000 to 7,600 Kelvin. It does have small traces of infrared and visible light but has a higher UV output so ozone for planets are needed. These stars gradually transform into red giants. These stars also have a large habitable zones.
 	Class G 	Yes 	These are yellow colored stars that are common with a medium size habitable zone. Temperatures range from 5,200 to 6,000 Kelvins that will eventually become a red giant or a red dwarf. These stars have the same lifespan as the Sol from the Sol System.
 	Class G Giant	Yes 	These large yellow stars are the size of red giants but they are much warmer and brighter as a result. Temperatures range from 5,200 to 6,500 Kelvins and have a larger habitable zone that normal Class G stars.
 	Class K 	Yes 	One of the most common stars yet are also known as orange dwarfs with temperatures ranging from 3,900 to 5,200 Kelvin that has twice the lifespan yet has a smaller habitable zone. UV output is a little smaller and not so strong solar winds along with weak tidal forces. Eventually, these stars will turn into red dwarfs
 	Class M Dwarf	Somewhat 	Red dwarfs are smaller stars that burn whatever hydrogen they have left a lot faster than normal stars with temperatures around 3,700 Kelvins. They have little luminosity and a smaller habitable zone but all the plants on habitable planets are black in order to absorb infrared. These dwarfs will turn into planetary nebula and eventually white dwarfs.
 	Class M Giant	Somewhat 	Red giants are large stars that are twice the size of any normal star yet have shorter lifespans with temperatures of 5,000 Kelvins. They do have habitable zones yet due to the high infrared, all plants have adapted black colorations in order to absorb the infrared light. Also, the habitable zones are around that of dwarfs. Eventually, these stars will go supernova and eventually black holes or neutron stars.
 	Class O 	No 	One of the most dangerous stars in the universe that has high electromagnetic radiation that strips away the atmospheres of planets so it is impossible for sustaining life. They also have very short lifespans with temperatures ranging from 33,000 to 40,000 Kelvins.
 	Protostar 	No 	They are young stars that are slowly forming into an actual star that will soon transform into Class A, B, F, or G depending on the molecular clouds it has gathered and the amount of hydrogen, the elements being form, and so on and so forth.
 	Class C 	Possible 	They are old stars that are approaching the end of its life cycle with oxygen and carbon making up the surface that gives it a sooty, ruby red surface with very little luminosity with temperatures of 4,300 Kelvins.
 	Class T 	Little 	Brown dwarfs are suns with temperatures between 700 to 1,300 Kelvins that are between the sizes of gas giants and stars. There is very little luminosity and heat to these stars and all the planets that orbit them are mostly frozen with a scarce ecosystem.
 	Ministar 	Little 	These are very small stars that are eight to twenty times the size of gas giants that offers very little much in its habitable zone. Yet some of these stars do orbit around larger stars which makes it valuable for creating large solar systems and making large habitable zones. These stars temperatures range from 5,200 to 7,000 Kelvins. However, there are some cases that these will be similar to Class M stars.
 	Frozen Star 	No 	Frozen stars are stars reaching at the end of their lives with temperatures of 273 Kelvins. Far below that of dwarf stars with great metallicity in them. They are the second dimmest and coldest among all stars with ice clouds forming around it and planets cease to create life.
 	Black Star 	No 	Black stars are what many consider the final stage of a white dwarf and with little luminosity and temperatures less of 5 Kelvins. Slowly, it transforms into a black dwarf.
 	Dark Star 	No 	Also called dark matter stars. Despite being made of concentrated dark matter and invisible to the naked eye, they do generate enough heat yet prevent nuclear fusion from happening.
 	Quasi Star 	Yes 	Also called black hole stars, these stars are sorta like a protostar yet have a black hole for a core yet its outer layers prevent it from collapsing in and going supernova. The materials inside the black hole generates radioactive pressure to compensate for the gravitational collapse and maintain equilibrium in the star. The temperature of these stars are somewhere between 5,200 to 7,800 Kelvin. These stars are also huge which means a large habitable zones. However, eventually, these stars will fade and become either black holes or just erased entirely.
 	Anti-Matter 	No 	They may look like red stars at first glance, but it is made of antimatter. These react violently to any form of matter that comes close to it. However, they are a good source to gain antimatter resources if harvested right. There are also some reports that destroyed planets have been seen orbiting around this star.
 	Blue Dwarf 	Somewhat 	These are very rare stars that are a result of a red dwarf becoming hotter to maintain the thermodynamic equilibrium, thus turning into a blue dwarf.
 	Q-Star 	No 	Q-stars may look like black holes, but they are not. It has a very dense neutron star made of exotic matter. Sometimes, these things are called grey holes; a mix between a light sucking, gravity pulling black hole and a light pulsing, gravity pushing white hole.
 	Strange Star 	Yes 	A strange, quark star that has high pressures that the neutrons in them are converted into strange quarks.
 	Uranium Star 	Somewhat 	Uranium stars are green colored stars that have high content of nuclear radiation that effects all the planets orbiting it and makes them radioactive. Planets in the habitable zone are effected too with some life that has evolved under the harsh effects of radiation. Temperatures of these stars are between 6,000 to 20,000 Kelvins depending on the size and how high the nuclear fusion/fission is.
 	Neutron Star 	No 	Neutron stars are stars that have small radius' and very high density which is composed of packed neutrons. Neutron stars are thought to form by the gravitational collapse of the remnant of a massive star after a supernova explosion, provided that the star is insufficiently massive to produce a black hole.
 	Pulsar 	No 	These are highly magnetized rotating neutron stars that emits beams of electromagnetic radiation from its poles which are funnel jets made of particles. Not to mention an erratic magnetosphere and are similar to Neutron Stars.
 	Black Dwarf 	No 	These dense, rocky and metallic ball is what is left of a star that has died and exhausted all its resources to maintain itself. These dead stars lost all gravitational pulls and mass which causes the very planets that orbits them to become rogue planets or floating, big balls of rock and ice or freezing gas giants in the dark vacuum of space.
 	Black Hole 	No 	Black holes are a result of a star dying and having its own gravity collapse in on itself which in a result of planets and even light being sucked in. Avoid systems that have these at all costs.
 	White Hole 	No 	White holes are the complete opposite of black holes. These celestial objects unleashes wave of energy, light, and gravity to anything around it. Some say that these are difficult to harvest any energy due to great gravitational forces pushing any form of structure or ship away from it.
Category:Celestial Objects