Friday, September 16, 2016

Penumbral eclipse to occur tonight -- DOST-PAGASA

NAGA CITY, September 16, 2016 (Bicol Standard) – Check out the skies tonight as a penumbral eclipse of the moon will occur.

The eclipse begins when the Moon enters penumbra (lighter part of a shadow) at 12:52 AM and ends at 4:56 AM (Philippine Standard Time), according to the DOST.

Image via DOST-PAGASA

It will also be observed in Australasia, Asia, Africa, Europe and eastern part of South America.

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.
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