The Moon crosses the ecliptic at the Moon’s Nodes twice per draconic month (approximately every 27 days) and a new moon occurs once in every synodic month (approx. The orbital planes of the Earth around the Sun and the Moon around the Earth need to align on the ecliptic plane – and that happens only a few times a year – and in certain conditions.Īs with many things, it’s all in the timing. You would think that they are in alignment every new moon – but not so. For a solar eclipse to occur, the Earth, Sun and Moon have to be in alignment. So, a solar eclipse is a new moon – but not all new moons are solar eclipses. A solar eclipse occurs when the Earth is in the Moon’s shadow which blocks out the Sun’s light during a new moon.
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