Planetary core

A planetary core was the innermost portion of a planet.
== Earth's core ==
When Earth formed billions of years ago, the Secret Heart became its core. (TV: )
Around 40,000 BC, the Euterpians planned to use Earth's core to refuel their mothership, but it was destroyed by solar flares before they could do so. (PROSE: )
In 1984, the Dominators attempted to acquire Earth's core to fuel their fleet, but were defeated by UNIT. (COMIC: )
In 2007, the Torchwood Institute drilled a borehole to Earth's core under the Thames Flood Barrier in an attempt to free the Secret Heart. (TV: )
During their invasion of Earth, the Daleks attempted to remove the core and replace it with a power system that would allow them to pilot the planet anywhere in the universe, but they were defeated by the First Doctor. (TV: ) During their second invasion thirty years later, they again attempted to remove the core and for the same purpose, but they were defeated by the Eighth Doctor. (AUDIO: , )
Iris Wildthyme visited the Earth's core. While there, she encountered reptile people and a "dashing old gentleman". (PROSE: )
== Cores of other planets ==
Earth's was not the only planetary core the Daleks wanted. They mined the core of Arkheon in an attempt to acquire the Arkheon Threshold, (PROSE: ) mined the core of Galacton to fuel the Dalek Seventh Fleet. (PROSE: ) During the Last Great Time War, the Daleks attempted to replace every planetary core in the Null Zone with hyperdrives so they could fire all the planets at Gallifrey. (AUDIO: )
The Kastrians' power source was drawn from the core of the planet Kastria. This was one of Eldrad's gifts to his people. (TV: )
The core of Lucifer was made of heavy elements which were the remains of the native Angels. (PROSE: )
The core of Spiridon was an allotrope of ice. (TV: )
Among the exhibits in the Pentaquoteque Gallery were paintings made from metal from a giant gas planet's core and held in stasis. (COMIC: )
The Omega Arsenal on Gallifrey was kept near the planet's core. (PROSE: )
The Skaro of N-Space had an icy core, known as the Ice Heart of Skaro. (COMIC: ) In the "unforeseeable future", the Daleks had lifts in Zone X that led to the very heart of their world. When Skaro imploded in this age, the First Doctor and Susan Foreman briefly sought to take refuge at Skaro's core to ride out the collapse. (COMIC: ) In the Unbound Universe, Skaro's core held a vast store of dimensional energy, making the planet a target of the Quatch. (AUDIO: )
At the core of Alvega resided the Controller of the Amarylls. When the Daleks invaded the planet, the natives' mastery of the environment proved too much for the invaders. A single Dalek flying saucer burrowed underground with the intent to destroy the Controller. When the last Dalek drone of its crew did so, Alvega's core collapsed, destroying the planet. (COMIC: )
Category:Geologic features from the real world