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Total lunar eclipse: The entire moon enters the umbra, creating the dramatic red transformation.
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Partial lunar eclipse: Only part of the moon moves into the umbra, leaving a shadowed gray bite across its surface.
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Penumbral lunar eclipse: The moon skirts only the outer shadow, dimming subtly without dramatic color change.
A total lunar eclipse includes all three stages — penumbral, partial and total — a process that can stretch across roughly five hours.
A Near-Perfect Alignment
During the March 3 total lunar eclipse, the moon will remain fully inside Earth’s umbra for 58 minutes and 18 seconds. With an umbral magnitude of about 1.15, the moon will pass just fully within the shadow’s core rather than plunging deeply through it.
That subtle geometry matters. Eclipses with magnitudes only slightly above 1 tend to produce lighter copper or reddish tones rather than a deep crimson, because the moon skirts the edge of the umbra rather than traveling through its darkest heart.
Still, the visual impact promises to be dramatic. As the bright Worm Moon dims and reddens, the night sky — normally washed out by full-moon glare — will darken enough for stars to reappear around it. From first shadow to final exit, the entire spectacle will last five hours and 38 minutes.
