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Published January 1983 | Published
Journal Article Open

Onions or Plum Puddings?

Abstract

One recipe in the Betty Crocker guide to planets might feature the liliaceous herb of the genus Allium pictured above - the onion. This onion is layered, and it is possible that the concentric layers may be similar to the distribution of material within a planet dictated by gravity. An alternative planetary structure might be more like a plum pudding, which has a matrix with inclusions of a material of a different composition. If you have ever tried to make a structure like this, you know that if you make the mixture too runny, the raisins will settle out before the cooking process "lithifies" the matrix and causes the raisins to stay in place.

Additional Information

© 1983 California Institute of Technology.

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