Partial penumbral eclipse up

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A partial penumbral eclipse of the moon will occur today and will be visible in the Philippines, the Department of Science and Technology said.

          The eclipse begins when the moon enters penumbra at 3:32 p.m. and ends at 7:53 p.m. Philippine Standards Time. It will also be observed in N.W. Europe , the Americas, Oceania, most of Asia.

          A penumbra refers to a partially shaded outer region of a shadow that an object casts, A penumbral eclipse occurs when the moon passes through the faint penumbral portion of the earth’s shadow.

          The lunar surface is not completely shadowed by the earth’s umbra (darkest part of a shadow). Instead, observers can see only the slightest dimming near the lunar limb closest to the umbra. The eclipse may be undetectable unless at least half of the moon enters the penumbra.