At the time of the darkest phase of the eclipse, the eclipse magnitude — that is, the percentage of the moon's diameter that is within the lighter penumbral shadow — will equal 96.4 percent.

Penumbral Eclipse You’ll see the penumbral lunar eclipse when the Moon passes through the penumbral shadow area.

A penumbral lunar eclipse is happening on March 25, the same day as March's full moon, the Worm Moon. Here's what skywatchers should look for.

As March's full Worm Moon rises late Sunday into early Monday, it will travel through the Earth's penumbra — the faint outer part of its shadow — creating a penumbral eclipse.

The moon will darken but not completely disappear as it slips into Earth's outer shadow on Friday (May 5), creating a penumbral lunar eclipse.

Like an underwhelming opening act, Sunday's lunar eclipse will leave you counting the days until the headliner total solar eclipse in two weeks.

A lunar eclipse happens when the moon passes through the shadow Earth makes when it gets in the way of the sun. During a penumbral eclipse, the moon crosses through the outer part of this shadow ...

Starting late Sunday night and into the early hours of Monday, March 25, the moon is set to pass through the outer part of the Earth's shadow, resulting in a penumbral lunar eclipse.

This year, the Flower Moon will also coincide with a penumbral lunar eclipse — when the moon moves through the outer part of the Earth's shadow — slightly dimming the moon, according to NASA.

March’s full worm moon will experience an almost perfect alignment with the sun and Earth, causing a penumbral lunar eclipse to grace the sky early Monday.

As March's full Worm Moon rises late Sunday into early Monday, it will travel through the Earth's penumbra — the faint outer part of its shadow — creating a penumbral eclipse.