Edge of the universe
The edge of the universe, edge of reality, end of the world, edge of the world or edge of creation, which Astrolabus equated with "the ends of the Earth", was the location where space actually ended. The Sixth Doctor claimed that "the world [had] no end", but was told by Astrolabus that this statement was a product of logic and that "logic [was] a new toy".[source needed] Beyond the edge of the universe was the Void.[source needed] According to the Fourteenth Doctor, the edge was roughly 100 trillion years away from Earth. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"])
History
Mondas was said to have drifted to "the edge of space" (although this was probably a reference to the edge of the solar system rather than the edge of the universe). (TV: The Tenth Planet [+]Loading...["The Tenth Planet (TV story)"])
The Empress of the Racnoss travelled to the edge of the universe in her Webstar, where she hibernated until the Secret Heart was uncovered. (TV: The Runaway Bride [+]Loading...["The Runaway Bride (TV story)"])
The Dæmon Azal travelled to the edge of the universe in the spacecraft Leviathan, where he encountered and merged with his counterpart from another reality. (COMIC: Voyage to the Edge of the Universe)
According to Salamar, Zeta Minor was located "on the very edge of the known universe." (TV: Planet of Evil)
The Fourth Doctor and Leela visited a planet on the edge of the known universe, where they fought vampires. (AUDIO: White Ghosts) They later travelled to the "edge of the cosmos", where they detected the R1C's ion drive and encountered a spiral nebula. (TV: Underworld)
The Fourth Doctor, Mike Yates and Fenella Wibbsey travelled to the edge of the universe, where the Demon had create the Sepulchre atop a planetoid. (AUDIO: Sepulchre)
In 1999, Anne Travers banished the Great Intelligence, stranding it on the edges of the universe, riding the blue shift outwards into infinity. (PROSE: Millennial Rites)
Astrolabus was hounded by Voyager to the very edge of the universe, a frozen wasteland with some rocky formations and a stormy sea which streamed from the edge downwards and into nothingness. He landed his TARDIS in the form of a lighthouse and use it to lure ships to their doom. He successfully found the ship of the humanoids who had taken his charts from him, only to be delayed in departing by the Sixth Doctor. It was with Voyager, the rightful owner of the charts, hot on his heels that Astrolabus left the edge of the world. After telling the Doctor to find Astrolabus on his behalf, Voyager sailed his death-ship off the edge of the universe and into the Void. (COMIC: Voyager)
The Tremas Master fled from the Krotons to the edge of the universe, where he collected the exotic particles he needed for use against the Chronovores. (PROSE: The Quantum Archangel)
Mortimus travelled to the edge of the universe, where he summoned Artemis. (PROSE: No Future)
The Eighth Doctor and Molly O'Sullivan travelled to the edge of the universe, where they encountered Liv Chenka and the Eminence. (AUDIO: Time's Horizon)
The Twelfth Doctor mentioned that humanity would eventually spread its way "to the very edges of the universe." (TV: Kill the Moon [+]Loading...["Kill the Moon"])
The Thirteenth Doctor visited the Unmarked Purlieus, an uncharted star system at "the very edge of reality", where she was infected by a psychic virus. (AUDIO: Salvation)
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A spaceship became stranded at the edge of the universe after leaving a wormhole, and the captain killed themselves to stop the two creatures from beyond the edge dubbed "Not-things" from using their ship to escape into the known universe. Three years afterwards, the Fourteenth Doctor and Donna Noble arrived on the spaceship due to the Doctor's TARDIS malfunctioning, with the Doctor claiming he had "never travelled [so] far", and they were confronted by the Not-things. In order to drive them back, the Doctor invoked a superstition about a line of salt holding back vampires, demons and ghosts in a game against the not-things, but they discerned his act was just a ploy and blew away the line. After the not-things were destroyed in the spaceship's self-destruction, the Doctor wondered if there would be consequences for invoking a superstition at the edge of the universe, "where the walls [were] thin and all things [were] possible", (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"]) later learning that "play[ing the] game" with the salt had allowed myths and legends to "cross the line" and enter the universe, starting with the Toymaker. (TV: The Giggle [+]Loading...["The Giggle (TV story)"])