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Mission to Earth’s core — a modest proposal

Stevenson, David J. (2003) Mission to Earth’s core — a modest proposal. Nature, 423 (6937). pp. 239-240. ISSN 0028-0836. doi:10.1038/423239a.

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Not science fiction, but a technically feasible plan to probe our planet's inner workings. Planetary missions have enhanced our understanding of the Solar System and how planets work, but no comparable exploratory effort has been directed towards the Earth’s interior, where equally fascinating scientific issues are waiting to be investigated. Here I propose a scheme for a mission to the Earth’s core, in which a small communication probe would be conveyed in a huge volume of liquid-iron alloy migrating down to the core along a crack that is propagating under the action of gravity. The grapefruit-sized probe would transmit its findings back to the surface using high-frequency seismic waves sensed by a ground-coupled wave detector. The probe should take about a week to reach the core, and the minimum mass of molten iron required would be 10^8–10^(10) kg — or roughly between an hour and a week of Earth’s total iron-foundry production.

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Stevenson, David J.0000-0001-9432-7159
Additional Information:© 2003 Nature Publishing Group.
Issue or Number:6937
Record Number:CaltechAUTHORS:20130703-134206149
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Official Citation:Stevenson, D. J. (2003). "Planetary science: Mission to Earth's core - a modest proposal." Nature 423(6937): 239-240.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39229
Deposited By: Tony Diaz
Deposited On:09 Jul 2013 19:44
Last Modified:09 Nov 2021 23:43

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