“Behold! Observing the Sun” was uploaded to Flickr

A broad hole in the corona was the Sun's dominant feature November 7-9, 2017. via NASA ift.tt/2jH94NM
embiggen by clicking http://ift.tt/2zlw8Zi
Behold! Observing the Sun was taken on November 20, 2017 at 02:30AM