Horizon: Who Is Afraid of a Big...
BBC FOUR
Wednesday 10 April 2019 23:30 - 00:30 (60 mins)
...Black Hole?. Scientists now believe black holes could hold the key to answering the ultimate question: what was there before the big bang? However, researching them is next to impossible. [S,AD]
Horizon: Who Is Afraid of a Big... may be available on playback
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