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

Ek on the periodic table. (TV: Shada)

Ek

Ek was the symbol of an element on the periodic table with an atomic number of 104. (TV: Shada)

Behind the scenes[]

Element 104 was first synthesised in in the 1960s and named Rutherfordium (Rf) in 1997, years after the 1979 setting of the television story Shada. The element was temporarily named unnilquadium (Unq) but was also known as eka-hafnium.

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