It is absolutely self-evident to me that space exploration is pointless, and the more urgent the crises besetting this planet we live on, the more pointless it becomes. I can see why people got excited about it in the 1960s, back when the world was young and we still thought there might be little green people out there – who wouldn’t want to meet them? Most serious opinion, however, has now settled on the “Where is everybody?” paradox first framed by the physicist Enrico Fermi in 1950. If there is intelligent........

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