Eclipse 2018: What's a Total Lunar Eclipse – Why Is It Called A Blood Moon? | Science | New

The Lunar Eclipse of the Bloody Moon will culminate on the horizon on Friday, July 27th.

During the lunar eclipse, the full moon will disappear briefly from view and reappear with a deep red or orange hue. The passage of the entire eclipse should pass over Central Asia, Africa, Europe and parts of South America and South Pacific. By comparison, the Super Blue Blood Moon eclipse of last January only lasted one hour and 16 minutes

What is a total lunar eclipse?

The elliptical orbit of the Moon carries the natural satellite across the Earth. The shadow projected by the Sun.

Throughout the month, the Moon moves deeper into the center of the shadow and then moves away and away, creating the different phases of the Moon

lit by the sun and c A new moon then occurs when the glowing orb moves completely in the shade and disappears from view

But about twice a year something unusual happens and the moon goes through the center from the Earth's shadow, the shadow, in one night, creating a total lunar eclipse As shown, the Full Moon appears in our sky – a view so familiar that we often take it for granted

NASA Goddard Space Flight Center

The NASA Goddard Space Flight Center explains: "As a clock, the Full Moon appears in our sky – a view so familiar that we often take it for granted.

"But about twice a year in the course of a few hours, the moon takes a decidedly different look.What causes this sudden change?"

"A lunar eclipse occurs when the moon passes through the moon. Shadow of the Earth, just as a solar eclipse occurs when part of the Earth passes through the shadow of the Moon

"But the Moon goes around the Sun every month during its phases, aligning with the Full Moon and the New Moon as Moon orbit around the Earth is slightly related to the planet's journey around the Sun, the two stellar bodies seldom marry

but twice a year the orbit of the Moon changes enough relative to the Sun., While staying fixed with respect to the stars, to ride the shadow of the Earth.

When this happens, the Moon is just in the right position to disappear into the sky. shadow of the Earth – a lunar eclipse

What's up? a Moon of Blood?

So why do astronomers refer to an eclipsed moon like the Moon of Blood? The rather disturbing name boils down to the dispersion of light in the atmosphere known as Rayleigh scattering.

NASA said: "As the Moon passes in the central part of the shadow, called the Shadow," Once it's fully inside the 39, shadow, the moon appears a dark red because of the sunlight scattered through the atmosphere of the Earth

"In fact, if you observe the eclipse of the moon's surface, you would see the sun set behind the whole earth, bathing you "

The Rayleigh scattering is exactly the same effect that paints the orange sky during sunsets and even gives their color to blue eyes.

Once the total phase of the Eclipse completed, the Moon passes to phase of partial and penumbral eclipse, the Moon will begin to return to normal

As soon as the Moon completely leaves the shadow of the Earth, it will look like a full white and regular moon.