The ESAC Helios Solar observatory captures from time to time objects crossing the Sun disk. In this case, a plane crossed the Sun. The image was taken on Wednesday 26th April 2017 at 10:48:43 Madrid time from the ESAC Helios Solar observatory. Image in H-alpha band (665nm wavelenght) showing the hydrogen emission from the Sun's chromosphere layer. The active regions around two sunspots groups are visible in the image.
Image credit: CESAR Educational team.
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