Thirty nine episodes across forty years and two presenters. Everybody agrees it is thirteen, thirteen and thirteen, and nobody agrees whether that is three series or one.
Start with Sagan's 1980 series if you are going to watch one, and watch it in order, because it is the most cumulative thing in this part of the catalogue: it builds an argument across thirteen hours rather than presenting thirteen separate subjects. The two later series share a host and a house style and neither requires the other or the original.
Seen some of these already? Tap the circles to tick them off. The full list below fills in as you go.
Thirteen episodes from 1980. Dated in its effects and not in its argument, and the one the other two are answering.
Thirteen episodes from 2014 with Neil deGrasse Tyson, following the original's thirteen episode shape on purpose.
Thirteen episodes from 2020, the most recent, on National Geographic and then Fox.
A suggested way in, not an official one. The full list is below: tick anything off in either place.
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