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    Earth’s Atmosphere may be source of some Lunar Water

    April 29, 2022, Categories  Astronomy/Space

    The image shows the distribution of surface ice at the moon’s south pole (left) and north pole (right), detected by NASA’s Moon Mineralogy Mapper instrument in 2009. Blue represents the ice locations, and the gray scale corresponds to surface temperature. Photo courtesy of NASA

    Hydrogen and oxygen ions escaping from Earth’s upper atmosphere and combining on the moon could be one of the sources of the known lunar water and ice, according to new research by University of Alaska Fairbanks Geophysical Institute scientists.

    The work led by UAF Geophysical Institute associate research professor Gunther Kletetschka adds to a growing body of research about water at the moon’s north and south poles.

    Finding water is key to NASA’s Artemis project, the planned long-term human presence o...

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    NASA’s THEMIS sees Auroras move to the rhythm of Earth’s Magnetic field

    September 13, 2016, Categories  Astronomy/Space

    An artist's rendering (not to scale) of a cross-section of the magnetosphere, with the solar wind on the left in yellow and magnetic field lines emanating from the Earth in blue. The five THEMIS probes were well-positioned to directly observe one particular magnetic field line as it oscillated back and forth roughly every six minutes. In this unstable environment, electrons in near-Earth space, depicted as white dots, stream rapidly down magnetic field lines towards Earth's poles. There, they interact with oxygen and nitrogen particles in the upper atmosphere, releasing photons and brightening a specific region of the aurora. Credit: Emmanuel Masongsong/UCLA EPSS/NASA

    An artist’s rendering (not to scale) of a cross-section of the magnetosphere, with the solar wind on the left in yellow and magnetic field lines emanating from the Earth in blue. The five THEMIS probes were well-positioned to directly observe one particular magnetic field line as it oscillated back and forth roughly every six minutes. In this unstable environment, electrons in near-Earth space, depicted as white dots, stream rapidly down magnetic field lines towards Earth’s poles. There, they interact with oxygen and nitrogen particles in the upper atmosphere, releasing photons and brightening a specific region of the aurora. Credit: Emmanuel Masongsong/UCLA EPSS/NASA

    For the first time, scientists have directly mapped Earth’s fluctuating magnetic field and resulting electrical currents to...

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