Tardis

Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.

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Tardis
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Tardis
Helium

Helium was a light element found on Earth. It was a gas at room temperature. (TV: The Robots of Death)

The Earth's Sun was made up of 74% hydrogen and 24% helium. (AUDIO: Feast of Fear)

Arcturus's life support system included a helium regenerator, which, if deactivated, he would die. (TV: The Curse of Peladon)

When humans inhaled large quantities of helium, their voices became high-pitched. The Fourth Doctor was able to use his respiratory bypass system to avoid its effects. (TV: The Robots of Death)

Helium 2 had the potential to exist during the Leptonic Era. (TV: Time and the Rani)

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