布莱恩·考克斯

Brian Cox

Stirling Colgate

Stirling Colgate

饰：Self

Alex Filippenko

饰：Self,(as Prof Alexei Filippenko)

Richard Muller

Richard Muller

饰：Self,(as Prof Richard Muller)

Steve Cowley

饰：Self,(as Prof Steve Cowley)

Ed Moses

饰：Self,(as Dr Edward Moses)