Smiling to himself, the Doctor merely closed the doors, turned around and hit the deck. The blue "police box" hurtled towards the planet at an alarming rate, spinning faster and faster, but not changing course. It was then and only then that the Doctor realised something. He clambered to his feet, working out calculations and all sorts of technical things in his head, half-relevant to the issue at hand, and pulled himself towards the TARDIS control panel. The Doctor muttered and mumbled as fast as he could to himself, occasionally sprouting words such as "velocity", "atmosphere" and even "banana". As he struggled to remain standing, he soon shrugged off most of these words, and remembered five (or four, to be technical) words which filled him with hope: "Tribophysical waveform macro-kinetic extrapolator". Luckily for him, all the shaking and rumbling that the TARDIS has undergone had dislodged the Extrapolator from its home in the TARDIS, and it was currently rattling around on the floor somewhere. Rethinking that, the Doctor momentarily questioned if it was lucky or not, before dramatically leaping for it. He picked it up, and, cradling it in his arms like a newborn baby, turned to face the door. The Doctor walked towards it in a sombre fashion, looking upwards and around the room.
"So many memories. So little time."
The moment was broken by a beeping noise and a flashing symbol on a monitor. Something was amiss. The Doctor, having seen and done nearly everything, was not as shocked as a human being would have been, but it was still odd. In a way, he sort of wished that a human being had been there to point it out, so that he could reassure them and try to figure out what was wrong – just as he had done with Rose. A name which haunted him, despite what he told himself. Before he could take another trip down memory lane, the blinking on the monitor reminded him of what was wrong. He should have been dead. Something was keeping the TARDIS and him alive. The monitors revealed that there was a layer of extremely poisonous, yet invisible, electrical-based gas surrounding the planet, which would fry any electrical equipment or life inside it – just like a mini-delta wave. Luckily for the Doctor, he managed to avoid thinking about the last time he'd nearly come face to face with a Delta Wave – albeit his own, and what it nearly cost him. Not only had he passed the layer of gas, but the TARDIS doors were ajar.
"No turning back now. Something is wrong here."
If something was protecting him from the outside peril, then that meant that it had some form of control over the TARDIS. This meant that while it could have been friendly, there was a chance that the opposite was true – and that something was after him. The Doctor had to get away. Continuing the plan he formulated before the distraction, he walked over to the doors and fully opened them once more. The beautiful view was now slightly hampered by the planet, which was no longer a bright shade of orange – but more a very dark blue. As much as he would have wanted to continue staring at the planet (which he did, and intended to at a future point in time), the Doctor's calculations meant that he had about a minute or so before impact. Sighing, he pointed the sonic screwdriver at the central control panel. A familiar buzzing noise echoed through the air, as the TARDIS's power shut down.
The doors shut behind him.
A/N: Sorry for the short chapter.