Logopolis is the key to the universe. It is in the middle of the universe.
If Logopolis is destroyed, then so is the entire universe.
The Logipolitans are a peaceful race. They do not use computers, they speak the lanquage.
Apparently Earth numbers and letters are difficult to understand considering they speak perfect English.
Logopolis has the technology to replicate anything-like the Pharos Project.
It also has the technology to fix everything, Like the TARDIS chamelion circuit.
They have the machinery on logopolis to do everything.
They do not sleep, eat or drink and homes are not needed as they are always working.
The sky is a permenant purple-ish greyish colour and night and day is not important.
Some of the Logopolitans work in small cave-like shelters and the remaining population work in seperate rooms which contain less spaces.
The only pieces of so called "machinery" that the Logopolitans use are small box objects for calculations and big portions of machinery.
They think that computers and all Earth machinery are inferior to theirs.
The Doctor Says that Logopolitans "Mutter the computations."
Galifrey is in the seventh system of the home constellation of Kasterberous.
It was also the center of the Great Time War. It is the home of the Time Lords.
The citidel contains a ceremonial place, a Space traffic center and room just for the president and the Key Of Rassilon .
It has seperate rooms for different Time Lords.
In order for Gallifrey to be protected by Vampires a common enemy, Omega the so called first Time Lord, constructed a second sun which was added to the system.
The second sun is only a small and artificial one unlike the first.
Gallifrey is only known really for having one sun. This star is called Pogar.
The Gallifrey system has 6 planets. Gallifrey is the second, Karn the third, Polafrey the fourth and another unknown one, possibly Demos. The third Doctor and Jo met an inhabitant from Demos. The species were called the Deamons.
Gallifrey's second name is also 'The shining suns of the seventh system' and it is 3 times the size of the our planet.
So when the planet almost crashed down on Earth after the Time Lords returned, it was almost destroyed.
Galifrey also has the same orbit as Alzarius, Adric's home planet.
Even though Earth is our home planet, there are still many hidden secrets, like U.N.I.T for example.
In 2006 nobody knew about the secret Racnoss plan under a company called H.C Clemants, where she and her babies were hidden deep in the centre of the Earth.
Earth has been under attatck by the Cybermen, Daleks, Autons, Yeti, Axons and more.
Earth is the place where the Gate was built .
The third, fourth, eighth and tenth Doctor have all regenerated on Earth.
Over the years technology has been built to defeat the oldest of enemies and now machinery to enable travel between paralell universes exists.
Earth is where the Master released the Toclafane into the world.
Fenric's Heamovores attacked Earth during world war two and so did the Cybermen and Daleks countless times.
The Pandorica event also happened on Earth as well as did the Eye Of Harmony opening.
The original Silurians and the Sea Devils invaded, trying to reclaim the planet both at seperate times.
But in 2084 they both joined forces in order to obliterate humanity once again and to reclaim the entire planet once more.