The iron in Earth's inner core weakens dramatically before it melts, explaining the unusual properties that exist in the moon-sized solid center of our planet that have, up until now, been difficult to understand.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...