How did magma oceans evolve on early Earth and Mars? Iron chemistry and primordial atmospheres offer clues

Before Earth became the blue planet, it was engulfed by a very different kind of ocean: a vast, deep magma ocean reaching down hundreds or perhaps even thousands of kilometers. Before Earth became the blue planet, it was engulfed by a very different kind of ocean: a vast, deep magma ocean reaching down hundreds or perhaps even thousands of kilometers. Planetary Sciences Phys.org – latest science and technology news stories