It is never definitively stated when the appearances of Gallifrey in the television series take place.

From space, Gallifrey is seen as a yellow-orange planet and is close enough to central space lanes for spacecraft to require clearance from Gallifreyan Space Traffic Control as they pass through its system ( The Invasion of Time, 1978 ).

Somewhere on Gallifrey there is also an institute called the Academy, which the Doctor and various other Time Lords have attended.

Somewhere on Gallifrey is a portal known as the Untempered Schism, a gap in the fabric of reality.

The Doctor's revelation that he is from Gallifrey elicits terror from the Empress of the Racnoss.

However, Gallifrey's reemergence is eventually stopped and reversed after it was made clear that the release of Gallifrey would lead to the Time Lords destroying time-in effect destroying the universe-in order to defeat the Daleks.

In the Dark Times ( occasionally mentioned in the televised serials such as The Five Doctors ), Gallifrey was at the centre of an empire covering dozens of worlds and continually being extended by heroes such as Prydonius ( whom the Time Lord chapter is named after ).

The Doctor was loomed in the House of Lungbarrow in the mountains of South Gallifrey, but unique among the house's cousins he has a belly button ( Lungbarrow suggests this is because he is a re-incarnation of The Other, but later BBC books featuring the Eighth Doctor suggest he actually has a Gallifreyan father and human mother as stated in the 1996 telemovie ).

This provides a possible explanation for existence of Irving Braxiatel, a Time Lord who claims to be the Doctor's brother yet is not one of the cousins from Lungbarrow and the implication in The Gallifrey Chronicles that the character Marnal is The Master's father ( whose existence is mentioned in The End of Time ).

In the Eighth Doctor Adventures novel The Ancestor Cell by Peter Anghelides and Stephen Cole, Gallifrey is destroyed as a result of the Eighth Doctor's desire to prevent the voodoo cult Faction Paradox from starting a war between the Time Lords and an unnamed Enemy.

It is also hinted that the Celestial Intervention Agency will evolve into the beings of pure thought known as the Celestis, who observe the war from outside this dimension ( the Last Parliament in which they sit resembles the Panopticon on Gallifrey and the closest anyone gets to describing them is similar to the Time Lords ' robes ).

The Ancestor Cell suggests that he is a future version of the Doctor, but this is retconned in The Gallifrey Chronicles, to him being everyone's potential future self.

In the last regular Eighth Doctor novel, The Gallifrey Chronicles by Lance Parkin, it is revealed that while Gallifrey was destroyed, the Time Lords were not erased from history.

In the program, the Doctor's TARDIS is an obsolete " Type 40 TT capsule " that he unofficially " borrowed " when he departed his home planet of Gallifrey.

In " The Invasion of Time ," a Citadel Guard on Gallifrey is initially baffled by the archaic lock when attempting to open the Doctor's TARDIS.

He comments that there is an excellent polygonal zero room beneath the junior senate block on Gallifrey.

The Time Lord homeworld, Gallifrey, is an Earth-like planet in the fictional constellation of Kasterborous.

In the fictional world of Doctor Who, the Eye of Harmony is an artificial black hole created by the Time Lords to provide energy for their home world of Gallifrey and their time travel technology.

# The image is being used for informational purposes about the fictional planet Gallifrey, from the Doctor Who universe ;

In order to have boltholes or decoys in case of attack, the Time Lords have created nine separate planet Gallifreys ( it even hinted that the original Gallifrey may at some point be reduced to ruins ) and special looms to constantly produce new soldiers.

The Doctor's TARDIS was for most of the franchise's history said to have been stolen from the Time Lords ' home planet, Gallifrey, where it was old, decommissioned and derelict ( and, in fact, in a museum ).

The Doctor hypothesised that the Monk left the Doctor's then-unnamed home planet, Gallifrey, some 50 years after the Doctor did.

Originally they were described as a powerful and wise race from the planet Gallifrey, from which the Doctor was a renegade ; details beyond this were very limited for the first decade of the series.

After six years, in The War Games, other aliens from his world appeared and were known as the Time Lords, and it was a further five years before the name of his home planet ( Gallifrey ) was revealed in The Time Warrior.

A Time Lady from the planet Gallifrey, she is a companion to the Fourth Doctor.

In Remembrance of the Daleks the Seventh Doctor explains that the " Hand of Omega " is the mythical name for the remote stellar manipulator invented by Omega, the first of the Time Lords of the planet Gallifrey.

" All these prophecy's came true: " It is returning " meaning Gallifrey, home planet of the Time Lords, " He will knock four times " referring to Someones knocking Event, " Your song is ending " meaning his death / regeneration, later " edited " too " This song is ending, but the story never ends " meaning he successfully regenerates.

* In Doctor Who, Gallifrey ( the home planet of the Time Lords ) has two suns in its planetary system.

In the context of the series, Omega is known as one of the founding fathers of the Time Lords of the planet Gallifrey, and is a revered figure in Time Lord history together with the equally legendary Rassilon ; the Third Doctor refers to him as the Time Lords ' " greatest hero ".

Her description of her home planet in The Sensorites ( 1964 ) matches the Tenth Doctor's much later descriptions of Gallifrey, and she is fully familiar with the history and landscape of Gallifrey's Time Lord society when she and the First Doctor are transported to " the Death Zone " in The Five Doctors.

In the backstory of the programme, he was the founder of Time Lord society on the planet Gallifrey.

And it is likely that the power provided by Rassilon's capture and installation of the Eye of Harmony would have been key to meeting the vast energy requirements of setting up and maintaining the defence screens for the entire planet of Gallifrey from its potential enemies.

Indeed, in " The Invasion of Time " the Fourth Doctor uses the Matrix circlet to consult with Rassilon's personality print to find a way of disabling the Quantum Force Field, which prevented physical penetration of the planet Gallifrey, after K9 had destroyed the Transduction ( teleportation ) Barriers, upon his order, allowing the Vardans to first, partially materialise.

The Matrix, in the long-running British science fiction television series Doctor Who, is a massive computer system on the planet Gallifrey that acts as the repository of the combined knowledge of the Time Lords.

He later wrote the novel Evolution for their sister range, the Missing Adventures ( set during the programme's run with previous Doctors and companions ), and also The Gallifrey Chronicles ( not to be confused with the final book in Eighth Doctor Adventures series ), a compendium detailing the history of the Doctor's home planet.

He is planning to aid an invasion of Gallifrey itself and to this end sets about destroying the transduction barrier that defends the planet from external threat.

This serial also introduces the name of the Doctor's home planet, Gallifrey.

* This serial marks a number of firsts: the first appearance of both Sarah Jane Smith and the Sontarans ; the first mention of the name Gallifrey, in reference to the Doctor's home planet ; and the Rutans who would later appear in Horror of Fang Rock.

In this serial, K-9 decides to remain on the Doctor's home planet of Gallifrey with Leela.

Within the series ' narrative, the Doctor is a centuries-old Time Lord alien from the planet Gallifrey who travels in time and space in his TARDIS, frequently with companions.

* The Panopticon Chamber of the planet Gallifrey in the science fiction series Doctor Who.