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Use "occulting" in a sentence
"Though NASA states that you can't actually see the comet hit the Sun the impact is blocked out by the red occulting disk that allows the other structures in the Sun's corona to be seen the ensuing explosion gives a pretty good idea of what's going on."
"In order to see the corona, an occulting disk has to block out the Sun disk."
"This image consists thus of two images; one of the corona and an image of the sun taken approximately at the same time and then superimposed on the occulting disk."