Each solar system is ranked based off the size and quantity of suns and the number of planets that can sustain human life. The ones who discover these new solar systems are able to name them and their celestial bodies(sun and planets). Upon discovering these solar systems, the discoverer is given a few choices of what to do. They can give control of the solar system to the Federation and receive monetary rewards, fame and special privilege or they can rule the solar system as an independent faction. Those who choose to rule the solar system are charge with the development of the solar system and its planets. This normally costs a lot of funds due to the need of colonizing the planets, setting up warp gates and space stations and setting up factories to mine dead worlds and asteroids of their mineral resources. This is normally too much for a normal person, so sometimes they'll sign a contract with a wealthy noble for financial aid, but this causes its own share of problems as most of the time the noble backing them will commit corrupt practices within the solar system or manage to steal control of the solar system from the discoverer. The other option is to apply for aid from the Federation in return for becoming a vassal state of the Federation and following their rules and laws. This normally requires the discoverer to pay taxes to the Federation and offering military support to the Federation when the time comes and sometimes the discoverer will have to take up arms themselves.
-1 star: Has 1 sun the size of Sol. Normally has 9 planets, but sometimes contain less. It is very rare to find a planet that can sustain life. Most planets are dead world that are mined for their mineral resources and are seen as gold mines to merchants. The workers of these mining operations live in space station that orbit the planet they are in charge of mining. Once they have enough funds, they owner of the solar system can choose to terraform the planets within, but planets like these are normally the weaker planets that are just their to make space for poorer people who can't afford to live on planets that contain mana.
-2 stars: Has 2 suns the size of Sol. Normally has 9 planets, but there's a chance of there being a 10th. It is rare to find a planet that can sustain life. Normally used as a mining site.
-3 stars: Has 3 suns the size of Sol and normally has 9 planets, but some have 10. It's uncommon to find a planet that can sustain life, but no unheard of. If there is a planet that can sustain life found there is a rare chance of there being a second. Dead worlds are used as mining sites.
-4 stars: Has 1 sun the size of Eta Carinae and has 10 planets within the solar system. It is quite common to find planets that can sustain life. It normally has 2 planets with a rare chance of finding a 3rd.
-5 stars: Has 2 suns. 1 is the size of Eta Carinae and 1 is the size of Sol. This solar system contains 10 planets with a rare chance of their being an 11th. There are always at least 2 planets that can sustain life and an uncommon, but not unheard of, chance of there being a 3rd.
-6 stars: Has 3 suns. 1 is the size of Eta Carinae and 2 are the size of Sol. There are normally 10 planets within the solar system, but it's there are sometimes 11. It is normal to find 3 planets within this solar system with a rare chance of there being a 4th.
-7 stars: Has 1 sun the size of Betelgeuse. There are normally 11 planets within the solar system with a rare chance of there being a 12th. It normally has 5 planets that can sustain life with a rare chance of finding a 6th.
-8 stars: Has 2 suns. 1 the size of Betelgeuse and 1 the size of Eta Carinae. There are normally 11 planets within the solar system, but there are sometimes 12. It normally has 7 planets that can sustain life with a rare chance of finding an 8th.
-9 stars: Has 1 sun the size of VY Canis Majoris. It normally has 12 planets within the solar system, but there are sometimes 13. It normally has 9 planets that can sustain life with a rare chance of there being a 10th.
While planets have rankings as well, they are ranked within their solar system and their rank that determines how valuable they can be can be different is measured by another solar system's rankings. As an example, I will show the planet rankings of a 1 to 2 stars solar system.
Planet Rankings:
-1 star: Normally the size of Mercury and is normally the closest to the sun. Due to the excessive heat of the planet, humans cannot live or terraform this type of planet.
-2 stars: Normally the size of Mars. Due to its size, it's either the 2nd, 3rd, or 4th planet from the sun. When it's the 2nd planet from the sun, the heat from the sun turns it into a desert planet and it's mainly used as a mining site. When it is the 3rd or 4th planet from the sun it can be used as a mining site or terraformed to be able to sustain life.
-3 stars: Normally the size of Venus. It's either the 2nd, 3rd, or 4th planet in the solar system. If 2nd, it's used as a mining site. If 3rd or 4th, it can be used as a mining site or be terraformed into a planet that can sustain life.
-4 stars: Normally the size of Earth. It's either the 3rd or 4th planet from the sun and can be turned into a mining site or terraformed to sustain life. This class of planet has a very weak form of energy that permeates throughout its atmosphere, but is too weak to be used or called mana.
-5 stars: Normally the size of Neptune. In the solar system it's normally within the 6th to 8th planet position. While in the 7th or 8th position, it is too cold to sustain life, but can be terraformed and with help of some machinery in orbit to control the climate, it'll be able to sustain life. While in the 6th position, it'll be able to sustain life as long as it is terraformed. This class of planet normally has a decent amount of mana, but can only give birth to weaker Talents.
-6 stars: Normally the size of Uranus. This is another planet that is normally between the 6th to 8th position. When in the 6th position, it can be terraformed to sustain life easily without the use of machinery in orbit, but when in the 7th or 8th position, it is deemed as a cold planet and while it can be terraformed, it will require machinery that can control its weather and climate from orbit. This class of planet has a decent amount of mana, but only gives birth to weak Talents.
-7 stars: Normally the size of Saturn and is either the 5th or 6th planet. It is normally a gas giant planet that has contains violent storms and winds. It is normally used as a mining site due to it containing many rare minerals. It can be terraformed to sustain life, but due to its massive winds and violent storms, people will have to live underground or on its moons. This class of planet contains a good amount of mana and can produce average grade Talents.
-8 stars: Normally the size of Jupiter and is either the 5th or 6th planet. This class of planet are also gas giants that contain violent storms that are bigger than the size of the Earth and fierce winds that can rip structures from the ground. It is normally used as a mining site. It can be terraformed to sustain life, but due to its weather, people will be forced to live underground or on one of its moons. This class of planet has a good amount of mana and is able to produce above average grade Talents.
-9 stars: Solar systems of this rank cannot produce or contain planets of this size and class
See how weak this seems? The stronger ranked solar systems contain more planets that can naturally sustain life and due to the number and size of the suns, more planets can have light and warmth at the end of the solar system's range of influence. In the stronger ranked solar systems, even the smallest planet is twice the size of Earth and contains a good amount of mana and can produce at least average grade Talents.
Some planets that are too dangerous due to something other than their environment are not included in the solar system's rankings and are deemed as Forbidden or Danger zones. Some people still travel to these dangerous planets in hopes of making a fortune, but most end up dead. They were warned, but didn't listen.
Humans have developed machines that can merge planets together by causing them to crash into each other and using excessive heat and gravity and cause the debris to melt together and form a new planet. They will then terraform the new planet to sustain life. This is normally only used on dead worlds that have been mined out completely. They normally do this in hopes of making the planet a higher grade and hope that it'll be able to produce more mana and higher grade Talents in the future. It takes a long time for planets formed like this to develop its own mana and start producing Talents.