Friday 14 July 2017

Fluorine grants white graphene new powers

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Fluorination of hexagonal boron nitride, a common insulator, turns it into a magnetic semiconductor. That may make the heat-resistant material suitable for electronics and sensors in extreme environments.
via Science Daily

Trilobites: Unlocking Mysteries in the Sun’s 11-Year Cycle

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Two studies focused on the sun’s maximum and minimum periods of activity, yielding new findings about its internal processes and external corona.
via New York Times

One of the brightest galaxies ever discovered

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Thanks to an amplified image produced by a gravitational lens, and the Gran Telescopio CANARIAS, a team of scientists has discovered one of the brightest galaxies known from the epoch when the universe had 20 percent of its present age.
via Science Daily
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NGC 4449: Close-up of a Small Galaxy

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(xxxedit and linkxxx) Grand spiral galaxies often seem to get all the glory. Their young, blue star clusters and pink star forming regions along sweeping spiral arms are guaranteed to attract attention. But small irregular galaxies form stars too, like NGC 4449, about 12 million light-years distant. Less than 20,000 light-years across, the small island universe is similar in size, and often compared to our Milky Way's satellite galaxy, the Large Magellanic Cloud (LMC). This remarkable Hubble Space Telescope close-up of the well-studied galaxy was reprocessed to highlight the telltale reddish glow of hydrogen gas. The glow traces NGC 4449's widespread star forming regions, some even larger than those in the LMC, with enormous interstellar arcs and bubbles blown by short-lived, massive stars. NGC 4449 is a member of a group of galaxies found in the constellation Canes Venatici. It also holds the distinction of being the first dwarf galaxy with an identified tidal star stream.

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The Secret of the Sun’s Magnetic Cycles

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Step inside a simulation of the interior of the sun as its magnetic field reverses, a process that creates solar storms that can interrupt power grids and satellite communications on Earth.
via New York Times

Eagle eye view of CERN