When The Infant of The Solar System was Breathing for The First Time
For the first time, scientist able to measure the composition of oxygen from the earlier state of our Solar System. This finding recently announced on 10 March at the Lunar and Planetary Science Conference in Houston, Texas, by Kevin McKeegan, a cosmochemist at the University of California, Los Angeles.
The finding that the Sun is relatively richer than Earth in oxygen-16, the most common oxygen isotope, contradicts the conventional wisdom that Earth has the same oxygen isotope composition as the Sun. The discovery also gives researchers a reference point for the oxygen composition at the origin of the Solar System.
To obtain the data, NASA use Genesis Probe to trap the stream of ionized particles a.k.a solar wind; because of the wind emanates from the relatively unchanged outer layers of the Sun, is thought to carry primordial oxygen (oxygen-16) among its elements.
Prior to this finding most believe that the composition of oxygen between Earth, Sun and other solarys-system bodies, should be the near the same; but this finding has given a new fact, that is, the solar has a greater proportion of oxygen-16 than on Earth.
This fact give scientists something to ponder, more; they need to understand why Earth’s oxygen composition is different from the Sun’s, and what chemical processes caused the change. Whatever the process, it would have sucked out oxygen-16 while the gas of the proto-Solar System condensed into solid grains that coalesced into the planets.
Like a first breath of a baby who just born around 4.5 billion years ago; the process that cause the difference of oxygen composition between Sun and Earth should protruding to research of what was going on back then. And that should give deeper understanding on how our solar system was birth, and ultimately about our present in this universe.
(Freely adapted from Nature 452, 259, 2008).
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