Updates are available Correction dated 2017-04-06

Click to view Correction: https://doi.org/10.1038/544025a

Winston Churchill’s essay on alien life found

Crossref DOI link: https://doi.org/10.1038/542289a

Published Online: 2017-02-16

Published Print: 2017-02

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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