The intro for Dr Who shows the tardis flying through the time vortex that takes one of two shades, sometimes transitioning between the two: The Vortex generally had two different colours, red and blue. Red generally indicated forward time travel and blue indicated travel to the past. ~Dr Who Wikia. And confirmation elsewhere:

What he meant by “If a Time Lord did that, he'd become a God. A vengeful God.”: If a Time Lord could possess that power the way Rose did, he would become a vengeful God. Rose obviously truly possessed the Time Vortex for the time as she didn't die. Once I asked about this: Why didn't Rose Tyler die after possessing Time Vortex?

Aug 24, 2014 · When the 9th Doctor took Time Vortex from Rose just for few seconds, his cells started to die leaving him no choice but to regenerate. Previously, Rose possessed Time Vortex for several minutes (She spent time in TARDIS while coming to The Doctor from 21st century and then her dialogue time while killing Daleks etc), but she didn't die.

Jan 20, 2015 · If I recall correctly, the tenth Doctor once travelled through the Time Vortex without the Tardis, using only his sonic screwdriver. I have a clear video in my mind with the Doctor flying through the vortex, his arms pulled close, screwdriver pointing forwards as if aiming with it.

The Time Vortex is what the TARDIS travels in, and extends to all points in space and time. Whatever the Doctor called the heart of the TARDIS ( "the ship's 'soul'" ), it wasn't actually the Vortex. And as we saw in "The Doctor's Wife," putting the TARDIS' "heart" into a mortal shell is invariably fatal to the mortal in question.

Jul 8, 2017 · This energy travels though the Vortex's Time Contours. Attached to a TARDIS's Containment Sphere is the Receptor Antenna, which collects artron energy using chronon transduction. The naked singularity at the Heart of a TARDIS is directly linked to the Space-Time Vortex, and uses Chronon Transduction to collect the energy.

Apr 29, 2019 · DOCTOR: You looked into the Time Vortex. Rose, no one's meant to see that. Also, The Doctor saved Rose by absorbing this energy from her: DOCTOR: I absorbed all the energy of the Time Vortex, and no one's meant to do that. Every cell in my body's dying. This energy is what killed The Doctor, so it is not regeneration energy. Evidently ...

Mar 13, 2014 · However, as Matt Smith has shown, a Time Lord can give their regeneration energy to save or heal others, even if they’re not regenerating. I’m looking for an in-Whoniverse answer for why he didn’t give Rose regeneration energy so she wouldn’t burn up from the time vortex, instead of absorbing it and killing his incarnation?

Dec 13, 2015 · The untempered schism is a kind of "hole" in the universe where unfiltered Time Vortex energy is seeping into the universe. We also know, from "The End of Time", that Time Lord cadets are exposed to the untempered schism at a very young age. So, it's clear that this untempered schism is a big part of Time Lord development.

Jul 21, 2014 · DOCTOR: You looked into the Time Vortex. Rose, no one's meant to see that. So the TARDIS is responding to the viewer's needs and desires, and probably the TARDIS's own desires. Out-of-universe, the TARDIS is itself a bit of Swiss Army Superpower for the Doctor, with the core ability being "manipulate time and/or space".