NASA’s Solar Dynamics Observatory came opposite an bauble that a booster has frequency celebrated before: a dim strand surrounding an active segment (Oct. 29-31, 2017).
Solar filaments are clouds of charged particles that boyant above a sun, tethered to it by captivating forces. They are customarily elongated and disproportionate strands. Only a handful of times before have we seen one made like a circle. The black area to a left of a brighter active segment is a coronal hole, a magnetically open segment of a sun. While it might have no vital systematic value, it is notable since of the rarity. The still was taken in a wavelength of impassioned ultraviolet light.
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