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    ammonia tagged posts

    First Transiting Exoplanet’s ‘Chemical Fingerprint’ reveals its Distant Birthplace

    April 9, 2021, Categories  Astronomy/Space

    Exoplanet HD 209458b transits its star. The illuminated crescent and its colours have been exaggerated to illustrate the light spectra that the astronomers used to identify the six molecules in its atmosphere.

    Astronomers have found evidence that the first exoplanet that was identified transiting its star could have migrated to a close orbit with its star from its original birthplace further away.

    Analysis of the planet’s atmosphere by a team including University of Warwick scientists has identified the chemical fingerprint of a planet that formed much further away from its sun than it currently resides...

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    Ammonia Sparks unexpected, exotic Lightning on Jupiter

    August 7, 2020, Categories  Astronomy/Space

    illustration used data obtained by NASA’s Juno mission to depict high-altitude electrical storms
    This illustration used data obtained by NASA’s Juno mission to depict high-altitude electrical storms on Jupiter. Juno’s sensitive Stellar Reference Unit camera detected unusual lightning flashes on the planet’s dark side during the spacecraft’s close flybys of the planet.

    NASA’s Juno spacecraft – orbiting and closely observing the planet Jupiter – has unexpectedly discovered lightning in the planet’s upper atmosphere, according to a multi-institutional study led by the NASA/Jet Propulsion Laboratory (JPL), which includes two Cornell University researchers.

    Jupiter’s gaseous atmosphere seems placid from a distance, but up close the clouds roil in a turbulent, chemically dynamic realm...

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    New Radio Map of Jupiter reveals what’s beneath Colorful Clouds

    June 3, 2016, Categories  Astronomy/Space

    The VLA radio map of the region around the Great Red Spot in Jupiter's atmosphere shows complex upwellings and downwellings of ammonia gas (upper map), that shape the colorful cloud layers seen in the approximately true-color Hubble map (lower map). Two radio wavelengths are shown in blue (2 cm) and gold (3 cm), probing depths of 30-90 kilometers below the clouds. Credit: Radio: Michael H. Wong, Imke de Pater (UC Berkeley), Robert J. Sault (Univ. Melbourne). Optical: NASA, ESA, A.A. Simon (GSFC), M.H. Wong (UC Berkeley), and G.S. Orton (JPL-Caltech)

    The VLA radio map of the region around the Great Red Spot in Jupiter’s atmosphere shows complex upwellings and downwellings of ammonia gas (upper map), that shape the colorful cloud layers seen in the approximately true-color Hubble map (lower map). Two radio wavelengths are shown in blue (2 cm) and gold (3 cm), probing depths of 30-90 kilometers below the clouds. Credit: Radio: Michael H. Wong, Imke de Pater (UC Berkeley), Robert J. Sault (Univ. Melbourne). Optical: NASA, ESA, A.A. Simon (GSFC), M.H. Wong (UC Berkeley), and G.S. Orton (JPL-Caltech)

    Astronomers using the upgraded Karl G...

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    Artificial leaf? Successful Synthesis of Ammonia using Visible Light, water, and atmospheric Nitrogen

    April 17, 2016, Categories  Biology/Biotechnology, Chemistry/Nanotechnology, Physics, Technology/Electronics

    Layout of the NH3 synthesis device bearing the Nb-SrTiO3 photoelectrode loaded with Au-NPs and a Zr/ZrOx thin film Credit: Copyright Hokkaido University

    Layout of the NH3 synthesis device bearing the Nb-SrTiO3 photoelectrode loaded with Au-NPs and a Zr/ZrOx thin film Credit: Copyright Hokkaido University

    By using a photoelectrode in which gold nanoparticles are loaded on an oxide semiconductor substrate, a research has worked to develop a method of artificial photosynthesis that may prove to be an excellent light energy conversion system.

    – Ammonia has gained attention as a next-generation energy carrier. By combining an optical antenna structure that can concentrate light into a nano-space, and a co-catalyst that selectively adsorbs nitrogen, we have succeeded in selectively synthesizing ammonia from water and di-nitrogen under visible light irradiation...

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