Artron energy

Artron energy has a connection with, apparently, both life force and with time travel, specifically the operations of a TARDIS. (DW: ''Four to Doomsday)

Prior to his self-imposed exile from Gallifrey, Magnus encountered and helped to save a living sphere of artron energy in space in hopes (in the words of the Doctor retelling the incident that it would have enabled the Time Lords "near-unlimited supply of temporal power and complete mastery over the Vortex". (Flashback)

Hedin noted the Doctor must have a great reserves of artron energy to survive near-fatal attacks on his person while in the Matrix. (DW: The Deadly Assasin]]).

The presence of the artron energy noted in Sarah Jane Smith's scan by the Bane, in part, alerted Mrs. Wormwood to her.


 * Mrs. Wormwood believe this indicated passage through the Vortex, though it may also have happened as a result of contact with the TARDIS itself, or for both reasons.

While the Bane had heard of artron energy, the Urbankans clearly had no knowledge of it.