NASA金星太陽面通過20120606

NASAのSODという観測衛星が撮影した、金星太陽面通過の映像。
NASA金星太陽面通過20120606

The Venus transit as seen in the 171 wavelength. This channel is especially good at showing coronal loops – the arcs extending off of the Sun where plasma moves along magnetic field lines. The brightest spots seen here are locations where the magnetic field near the surface is exceptionally strong.

Credit: NASA SDO

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