The penumbral lunar eclipse will begin at 10:15 p.m. on May 5 (Vietnam time) and can be observed from anywhere the Moon is above the horizon, including Antarctica, Asia, Russia, Oceania, and East and Central Africa.
According to timeanddate.com , the entire territory of Vietnam will be in the area where the total lunar eclipse will be observed. In Ho Chi Minh City, the penumbral lunar eclipse is expected to begin on the night of May 5, reaching its peak at 0:22 a.m. on May 6.
The phenomenon will end more than two hours later, at 2:31 a.m.
A penumbral lunar eclipse will occur on the evening of May 5. (Photo: space.com)
People in North America, South America, or most of Europe will not be able to see a penumbral lunar eclipse because the Moon will be below the horizon the entire time the Earth is in the Moon's shadow.
Like all lunar eclipses, a penumbral lunar eclipse occurs when the Earth passes between the Moon and the Sun. This causes the Earth to block the light from the Sun and cast a shadow on the Moon.
A penumbral solar eclipse occurs when the Moon enters the brighter outer region of Earth's shadow, called the penumbra. This is the area where Earth appears to cover part of the Sun's disk, but not all of it. When the Moon is in the penumbra, it receives less light from the Sun.
To observers from Earth, the Moon appears to darken but not disappear completely.
This effect can be subtle and is sometimes only seen in detailed photographs or by people with extremely sharp eyesight. However, there are occasional events where the entire Moon moves into the penumbra. These rare eclipses cause more darkness and are more easily seen with the naked eye.
Such an event is called a total penumbral lunar eclipse and is very rare. Once the Moon enters the penumbra, it is likely that at least part of the Moon will touch the umbra – the darker inner part of the Earth's shadow.
The last penumbral lunar eclipse visible from North America was on November 30, 2020, and this special astronomical phenomenon will return on March 25, 2024.
Kong Anh (Source: Synthesis)
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