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Moon and Earth have common water source

Researchers used a multicollector ion microprobe to study hydrogen-deuterium ratios in lunar rock and on Earth. Their conclusion: The Moon’s water did not come from comets but was already present on Earth 4.5 billion years ago, when a giant collision sent material from Earth to form the Moon.

PROVIDENCE, R.I. [Brown University] —Water inside the Moon’s mantle came from primitive meteorites, new research finds, the same source thought to have supplied most of the water on Earth. The findings raise new questions about the process that formed the Moon. (more…)

Carbon’s role in atmosphere formation

By Guest PostApril 27, 2013Sciencealberto saal, atmosphere, atmosphere formation, atmospheric evolution, brown, brown university, carbon, carbon monoxide, carnegie institution, diane wetzel, erik hauri, evolution of planet, greenhouse conditions, high greenhouse potential, iron carbonyl, liquid water, magma, malcolm rutherford, mars, mars history, methane, methane gas, northwestern university, oxygen fugacity, role, steven jacobsen, subsurface carbon, volcanism, Washington

A new study in Proceedings of the National Academy of Sciences suggests that the way carbon moves from within a planet to the surface plays a big role in the evolution of a planet’s atmosphere. If Mars released much of its carbon as methane, for example, it might have been warm enough to support liquid water.

PROVIDENCE, R.I. [Brown University] — A new study of how carbon is trapped and released by iron-rich volcanic magma offers clues about the early atmospheric evolution on Mars and other terrestrial bodies. (more…)

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Moon and Earth have common water source

Carbon’s role in atmosphere formation