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    Category Astronomy/Space

    Scientist sees evidence of Planet Formation in Narrow Rings of other Solar Systems

    October 22, 2017, Categories  Astronomy/Space

    Gemini Planet Imager observations reveal a complex pattern of variations in brightness and polarization around the HR 4796A disk. Credit: Marshall Perrin (Space Telescope Science Institute), Gaspard Duchene (UC Berkeley), Max Millar-Blanchaer (University of Toronto), and the GPI Team

    Gemini Planet Imager observations reveal a complex pattern of variations in brightness and polarization around the HR 4796A disk. Credit: Marshall Perrin (Space Telescope Science Institute), Gaspard Duchene (UC Berkeley), Max Millar-Blanchaer (University of Toronto), and the GPI Team

    Narrow dense rings of comets are coming together to form planets on the outskirts of at least 3 distant solar systems, astronomers have found in data from a pair of NASA telescopes. Estimating the mass of these rings from the amount of light they reflect shows that each of these developing planets is at least the size of a few Earths, according to Carey Lisse, a planetary scientist at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland.

    Over the past few decades, using powerful NA...

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    Scientists Dig into the Origin of Organics on Dwarf Planet Ceres

    October 21, 2017, Categories  Astronomy/Space

    SwRI scientists are studying the geology associated with the organic-rich areas on Ceres. Dawn spacecraft data show a region around the Ernutet crater where organic concentrations have been discovered (background image). The color coding shows the surface concentration of organics, as inferred from the visible and near infrared spectrometer. The inset shows a higher resolution enhanced color image of the Ernutet crater acquired by Dawn’s framing camera. Regions in red indicate higher concentration of organics. Credit: Image courtesy of NASA/JPL-Caltech/UCLA/ASI/INAF/MPS/DLR/IDA

    SwRI scientists are studying the geology associated with the organic-rich areas on Ceres. Dawn spacecraft data show a region around the Ernutet crater where organic concentrations have been discovered (background image). The color coding shows the surface concentration of organics, as inferred from the visible and near infrared spectrometer. The inset shows a higher resolution enhanced color image of the Ernutet crater acquired by Dawn’s framing camera. Regions in red indicate higher concentration of organics. Credit: Image courtesy of NASA/JPL-Caltech/UCLA/ASI/INAF/MPS/DLR/IDA

    Organic materials are probably native to the planet...

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    Noxious Ice Cloud on Saturn’s moon Titan

    October 21, 2017, Categories  Astronomy/Space

    This view of Saturn's largest moon, Titan, is among the last images the Cassini spacecraft sent to Earth before it plunged into the giant planet's atmosphere. Credit: NASA/JPL-Caltech/Space Science Institute

    This view of Saturn’s largest moon, Titan, is among the last images the Cassini spacecraft sent to Earth before it plunged into the giant planet’s atmosphere. Credit: NASA/JPL-Caltech/Space Science Institute

    Researchers with NASA’s Cassini mission found evidence of a toxic hybrid ice in a wispy cloud high above the south pole of Saturn’s largest moon, Titan. The finding is a new demonstration of the complex chemistry occurring in Titan’s atmosphere – in this case, cloud formation in the giant moon’s stratosphere – and part of a collection of processes that ultimately helps deliver a smorgasbord of organic molecules to Titan’s surface.

    Invisible to the human eye, the cloud was detected at infrared wavelengths by the Composite Infrared Spectrometer, or CIRS, on the Cassini spacecraft...

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    NASA’s MAVEN mission finds Mars has a Twisted Magnetic Tail

    October 20, 2017, Categories  Astronomy/Space

    Artist's conception of the complex magnetic field environment at Mars. Yellow lines represent magnetic field lines from the Sun carried by the solar wind, blue lines represent Martian surface magnetic fields, white sparks are reconnection activity, and red lines are reconnected magnetic fields that link the surface to space via the Martian magnetotail. Credit: Anil Rao/Univ. of Colorado/MAVEN/NASA GSFC

    Artist’s conception of the complex magnetic field environment at Mars. Yellow lines represent magnetic field lines from the Sun carried by the solar wind, blue lines represent Martian surface magnetic fields, white sparks are reconnection activity, and red lines are reconnected magnetic fields that link the surface to space via the Martian magnetotail. Credit: Anil Rao/Univ. of Colorado/MAVEN/NASA GSFC

    Mars has an invisible magnetic “tail” that is twisted by interaction with the solar wind, according to new research using data from NASA’s MAVEN spacecraft...

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