Moontanman Posted March 4, 2011 Report Posted March 4, 2011 Oldest Objects in Solar System Indicate a Turbulent Beginning Compositional X-ray image of the rim and margin of a ~4.6 billion year old calcium aluminum refractory inclusion (CAI) from the Allende carbonaceous chondrite. Core extending well beyond the field of view to the upper left consists of melilite, spinel and perovskite. Rim consists of a sequence of mono-mineral layers a few micrometers thick (hibonite, perovskite, spinel, melilite/sodalite, pyroxene, and olivine). A spinel-rich micro-inclusion appears to have been entrapped while the rim was forming. (Credit: Justin Simon/NASA) ScienceDaily (Mar. 3, 2011) — Scientists have found that calcium, aluminum-rich inclusions (CAIs), some of the oldest objects in the solar system, formed far away from our sun and then later fell back into the mid-plane of the solar system. The findings may lead to a greater understanding of how our solar system and possibly other solar systems formed and evolved. http://www.sciencedaily.com/releases/2011/03/110303141544.htm Quote
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