Stephen Hawking has finally spoken out about Zayn Malik's decision to leave British boy band One Direction.At a speaking engagement in Sydney on Saturday night, the noted cosmologist appeared via hologram from his home in Cambridge to talk about living with ALS, the mysteries of the universe, and other important things, like One Direction.During a question and answer session, an audience member asked what the "cosmological effect" of Zayn's abrupt exit from the band last month might be.
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