Total Lunar Eclipse Blood Moon on September 7th

On September 7, 2025, a Lunar eclipse total, known as a 'Blood Moon', will be an astronomical event of great magnitude.

With an impressive duration of 1 hour and 22 minutes and visibility for approximately 6.2 billion people, this natural phenomenon promises to enchant astronomy lovers around the world.

In this article, we will explore the details of this eclipse, including timing, global visibility, and the causes of the Moon's fascinating reddish coloration during the total phase.

Eclipse Overview and Global Timeline

The total lunar eclipse of September 7, 2025, promises to be a fascinating visual experience.

This enchanting phenomenon will potentially be visible for up to 6.2 billion people around the globe.

With an estimated total phase of 1 hour and 22 minutes, the Moon will transcend its usual form and take on a characteristic reddish hue, known as the 'Blood Moon'.

This cosmic spectacle results from the refraction of sunlight, which passes through the Earth's atmosphere while the Moon passes through our planet's shadow, creating a breathtaking scene.

Read more about the lunar eclipse timing.

Those who intend to follow the eclipse can watch the event live through online broadcasts of National Observatory, which further expands the scope of this unforgettable celestial moment.

How to watch the eclipse

Watching the total lunar eclipse on September 7, 2025 will be a fascinating and unique experience.

For those in privileged regions, direct observation of the phenomenon may reveal the incredible reddish coloration of the Blood Moon.

Additionally, an excellent alternative for those who cannot see it clearly is to watch the official live broadcast on the National Observatory's YouTube channel.

Visibility in Brazil

A visibility of the lunar eclipse of September 7, 2025 is quite limited in Brazil.

Find out more about the event.

Only the penumbral phase can be observed in some regions, unlike the total phase, which will not be visible.

The penumbral phase occurs when the Moon passes through the outer part of the Earth's shadow, resulting in a slight darkening, while the total phase, not visible here, transforms the Moon's appearance into intense red due to the refraction of sunlight.

This difference in intensity in the phases reinforces how observation in Brazil will be limited, with the Moon remaining mostly obscured by the effects of the Earth's atmosphere, not allowing the view of the full spectacle of the total lunar eclipse.

Live broadcast

Watch the incredible “Blood Moon” from the comfort of your home! O National Observatory YouTube channel offers a live broadcast unmissable experience of this fascinating phenomenon that occurs on September 7, 2025. This opportunity is essential for millions who will not have direct visibility of the event, especially in Brazil, where it will only be possible to observe the penumbral phase.

So, take the opportunity to understand the beauty of the Moon's reddish color, caused by the refraction of sunlight.

Don't miss this enriching experience and access the National Observatory now.

Why does the moon turn red?

During a total lunar eclipse, such as the one that will occur on September 7, 2025, the reddish coloration of the Moon, known as Blood Moon, occurs due to a fascinating physical phenomenon.

When the Earth is positioned directly between the Sun and the Moon, its shadow is projected onto the lunar surface.

This moment creates the perfect scenario for sunlight to pass through Earth's atmosphere before reaching the Moon.

This process is known as refraction of light.

Sunlight contains many colors, each with its own wavelength.

When light passes through Earth's atmosphere, air molecules scatter blue light, allowing longer wavelengths, such as red and orange, to pass through. It's the same phenomenon we see in magnificent sunsets, when the sky takes on orange and reddish hues.

This reddish light then hits the lunar surface, resulting in iconic coloration that we can observe during the eclipse.

This event can be followed in live broadcasts, such as the one made by National Observatory on YouTube.

Thus, the Blood Moon becomes a celestial spectacle, offering a new perspective on the universe in which we live.

The 2025 Lunar Eclipse will be a must-see spectacle for astronomy enthusiasts.

So, be sure to prepare to observe this unique phenomenon and, if possible, watch the live broadcast on the National Observatory.