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    silicate dust tagged posts

    Winds Blowing off a Dying Star

    November 10, 2017, Categories  Astronomy/Space

    High spatial-resolution image of AlO and SiO molecules around AGB star W Hydrae, observed using ALMA, with AlO molecule emissions in red and those from SiO molecules and the star in yellow.
    Credit: ALMA [ESO/NAOJ/NRAO], Takigawa et al, Kyoto University

    Scientists use ALMA to explain aluminum oxide enrichment around AGB stars. Stars like our Sun eject large amounts of gas and dust into space, containing various elements and compounds. Asymptotic giant branch – AGB – phase stars, near their end of life, are particularly significant sources of such substances in our galaxy. Formation of dust around AGB stars has been considered to play an important role in triggering acceleration of stellar wind, but the detailed mechanism of this acceleration has not been well explained.

    And there is yet anoth...

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    Chemical Composition of Dust from beyond the Solar System analyzed

    April 16, 2016, Categories  Astronomy/Space, Uncategorized

    The Cosmic Dust Analyser on the international Cassini spacecraft has detected the faint but distinct signature of dust coming from outside our Solar System, from the local interstellar cloud: an almost empty bubble of gas and dust we are travelling through with a distinct direction and speed. This graphic summarises the location of Saturn, and the Solar System, with respect to the local interstellar cloud, and our place in the Milky Way galaxy. Credit: ESA

    The Cosmic Dust Analyser on the international Cassini spacecraft has detected the faint but distinct signature of dust coming from outside our Solar System, from the local interstellar cloud: an almost empty bubble of gas and dust we are travelling through with a distinct direction and speed. This graphic summarises the location of Saturn, and the Solar System, with respect to the local interstellar cloud, and our place in the Milky Way galaxy. Credit: ESA

    A Heidelberg-designed dust detector on Cassini space probe – ie cosmic dust analyser (CDA) – has identified several extremely rare and minuscule particles of interstellar dust from outside our solar system, and examined their chemical composition...

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