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In this July 1997 still frame captured from video, the bright star Aldebaran has just reappeared on the dark limb of the waning crescent moon in this predawn occultation.

掩蔽(Occultation)とは?天文学における遮蔽現象の仕組みと科学的価値

掩蔽天文学月掩蔽小惑星
Totality during the solar eclipse of August 11, 1999, showing the solar corona and prominences

食のメカニズム日食と月食が起こる天文学的理由

日食月食シジジー
A syzygy occurs during eclipses (numbers 1, 2, 3, 4).

シジジー(惑星直列)の仕組みと天文学的現象

シジジー惑星直列掩蔽
Totality during the solar eclipse of August 11, 1999, showing the solar corona and prominences

食のメカニズム日食と月食が起こる天文学的理由

日食月食シジジー