There will be a "blood moon" on March 13, can Vietnam see it?

(Dan Tri) - When the Moon is completely covered by the Earth's shadow, it will darken, but not turn completely black. Instead, it will have a dark red color and is called a "Red Moon", or "Blood Moon".

Amazing astronomical phenomenon

The blood moon is an amazing astronomical phenomenon that many people look forward to (Photo: Getty).

On March 13-14, astronomy enthusiasts will have the opportunity to admire a total lunar eclipse, also known as the "blood moon".

This event becomes even more special when it recalls the lunar eclipse that Christopher Columbus (the explorer who opened the American expedition) took advantage of more than 5 centuries ago to manipulate the indigenous people.

According to history, in 1504, Columbus and his crew were stranded on the coast of Jamaica. When the Arawak Indians refused to continue providing food, Columbus used his knowledge of astronomy.

He consulted an astronomical table and realized that there was a total lunar eclipse coming up on March 1, 1504. Columbus warned the Arawaks that his god would "wipe out the moon" as punishment if they did not continue to provide food.

When the lunar eclipse occurred and the moon turned a fiery red, the Arawaks panicked and rushed to bring food to Columbus.

The upcoming total lunar eclipse on March 13 recalls this historic event because it occurs on the same path the Moon takes through the Earth's shadow, i.e., on the same starry background.

This eclipse is no coincidence, but the result of the Saros cycle, an astronomical cycle that occurs every 223 lunar months (18 years, 11 days, and 8 hours). According to NASA, the March eclipse is part of Saros cycle 123, which began in 1628 and will continue into 2061.

Can Vietnam observe the lunar eclipse in March?

On March 13 and 14, a total lunar eclipse will occur, lasting about 5 hours, and the "blood moon" will appear for about 65 minutes. We can safely observe this phenomenon with the naked eye.

However, not every area in the world has the opportunity to admire this amazing natural phenomenon.

While the Pacific, North and South America will be able to see the eclipse clearly, parts of Europe will only be able to catch a glimpse of it when the moon sets, which is near dawn. Some countries in East Asia will also catch a glimpse of it when the moon rises.

However, according to Time&Date , Vietnam is not in the area where the lunar eclipse can be observed in March. This is because the lunar eclipse can only be observed from areas where the Moon is above the horizon.

If it is daytime in an area, the Moon will be below the horizon, making it impossible to observe the eclipse.

Vietnam is not in the area where the lunar eclipse in March can be observed (Photo: Date and Time).

Additionally, the Moon does not orbit the Earth in an orbit that is exactly aligned with the plane of the Earth's orbit around the Sun. This tilt of about 5 degrees means that lunar eclipses do not occur every month, and when they do, only certain areas are able to see them in whole or in part.

While people in North, Central and South America can see the entire event, some European and African countries can only see part of it, and most of the Middle East and Asia cannot see the phenomenon.

According to Time&Date, astronomy enthusiasts in Vietnam will have to wait until September 7 to observe the first total lunar eclipse of the year. This is also the longest total lunar eclipse since 2022, with its phases lasting 1 hour and 22 minutes.

Why is the Moon blood red?

When the Moon is completely covered by the Earth's shadow, it darkens, but does not turn completely black. Instead, it takes on a deep red color and is known as a "Red Moon", or "Blood Moon".

Explaining this phenomenon, scientists say that sunlight contains all the colors we can see.

In particular, the gas particles that make up Earth's atmosphere are more likely to scatter light with blue wavelengths, while light with red wavelengths still passes through.

This is called Rayleigh scattering, and it is why the sky is usually blue, but sunrises and sunsets are often red.

During a lunar eclipse, red light can pass through Earth's atmosphere and be refracted — or bent — toward the Moon, while blue light is filtered out. This makes the Moon appear reddish to Earth's observers.

Source: https://dantri.com.vn/khoa-hoc/ngay-133-xay-ra-trang-mau-viet-nam-co-xem-duoc-20250311102320774.htm