Molten iron in Earth-like exoplanet cores.

The article comments on a study on the use of a laser to generate conditions similar to those inside the cores of Earth-like exoplanets, which references a research paper by R. G. Kraus et al., published within the issue of "Science." Topics discussed include the crystallization of molten iron under extreme conditions, factors for habitability of exoplanets, and theory on the formation of Earth-like exoplanets.