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    forsterite tagged posts

    Lasers Melt Rocks to reveal development of Super-Earths and how giant impacts make Magma

    August 4, 2016, Categories  Astronomy/Space, Physics

    High-powered lasers melt mineral for planet formation experiments. Researchers observed the melting of forsterite, the most common constituent of Earth's mantle, to understand how the cores of planets form and develop. The laser is able to create pressures representative of the extreme collisions between objects in space. The target is a 4 millimeter square. Al is aluminum and Qz is quartz. Image by Toshimori Sekine, Hiroshima University. Image may only be re-used with attribution. Credit: Image courtesy of Hiroshima University

    High-powered lasers melt mineral for planet formation experiments. Researchers observed the melting of forsterite, the most common constituent of Earth’s mantle, to understand how the cores of planets form and develop. The laser is able to create pressures representative of the extreme collisions between objects in space. The target is a 4 millimeter square. Al is aluminum and Qz is quartz. Image by Toshimori Sekine, Hiroshima University. Image may only be re-used with attribution. Credit: Image courtesy of Hiroshima University

    New experiments provide insight into how Earth-type planets form when giant asteroids or planetesimals collide and how the interiors of such planets develop...

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    Comet Impacts may have led to Life on Earth – and perhaps elsewhere

    August 19, 2015, Categories  Astronomy/Space, Biology/Biotechnology, Chemistry/Nanotechnology

    C/2006 P1 Comet McNaught, the 'Great Comet of 2007', as seen from Swift's Creek, Victoria, Australia on 23 January 2007. Image credit: Fir0002 / Flagstaffotos / Wikimedia Commons CC BY-SA 3.0.

    C/2006 P1 Comet McNaught, the ‘Great Comet of 2007′, as seen from Swift’s Creek, Victoria, Australia on 23 January 2007. Image credit: Fir0002 / Flagstaffotos / Wikimedia Commons CC BY-SA 3.0.

    Substantial synthesis of peptides – the first building blocks of life may have been driven by comet impacts. Dr Sugahara from JAMSTEC in Yokahama, and Dr Koichi Mimura, from Nagoya University performed a series of experiments to mimic the conditions of comet impacts on the Early Earth at the time when life first appeared, around 4 billion years ago.

    They took frozen mixtures of amino acid, water ice and silicate (forsterite) at cryogenic condition (77 K), and used a propellant gun to simulate the shock of a comet impact...

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