Just as every school child knows that water is formed by the two elements of hydrogen and oxygen in a very simple combination we all know as H2O, so deflation has its own elements of composition.

FORBES: Deflation Dissected

Planets, on the other hand, will be richer in heavy elements than the star they orbit, since there were fewer light elements left over by the time they formed.

ECONOMIST: Twinkle, twinkle, giant planet

But some theorists believe that when it is possible, they will be able to determine how a particular object formed by comparing its spectrum with that of its parent star to determine the relative proportions of heavy elements in the two bodies.

ECONOMIST: Twinkle, twinkle, giant planet