When the Sun Moon and Earth are aligned in aligned a lunar eclipse the Earth comes between the Moon and the Sun and casts a shadow on its satellite lunar eclipses only take place at full moon since full moon comes every month. So why don't we've an eclipse monthly .

This is Because moon's orbit may be a little tilted in reference to Earth.

That's why sun earth and moon don't align always however twice a year moon comes at a position where it aligns with Earth and Sun which costs ought's Shadow on moon and ultimately causes a lunar eclipse lunar eclipses have three kinds total partial and penumbra in total lunar eclipse Earth's umbra the central dark part of its shadow covers entire Moon.

Total lunar eclipse is very rare and requires the sun earth and moon to be perfectly aligned its partial lunar eclipse when only a part of moon comes under Earth's Shadow Earth's Shadow appears, very dark on the side of the moon in partial eclipse.

There are a minimum of two partial eclipse s per annum a penumbral eclipse happens with more travels through the faint penumbra portion of Earth's Shadow a lunar eclipse can last for a few hours, but what makes the mood read during eclipse in total lunar eclipse red wavelength lights are refracted towards Moon making it red in Asian times eclipses were seen as phenomena to be feared now scientists have cleared goldsmiths about eclipses and it is perfectly safe to look at a lunar eclipse with Naked Eyes.

A blood moon eclipse wasn't always something to look forward to when the moon turned red thousands of years ago the normal Mayans and Mesopotamians feared that something monstrous and evil was eating the moon.

They would Shout at the night sky to undertake and debar the ravenous beasts and since the typical eclipse lasts around 100 minutes and therefore the Moon Returns to normal afterward.

They were probably convinced that their whooping and Howling actually worked.

We know now that Oh that the moon doesn't need our protection.

But why does it turn red within the first place?

What is a lunar eclipse? Is it safe to look at it with naked eye?

Whenever you search at a full-of-the-moon , you're seeing sunlight that's reflected off the lunar surface. So if something were to dam that sunlight say the world then in theory the moon should disappear from view but during a complete eclipse when the moon passes through the Earth's Shadow. We get a red moon not a Vanishing one. So what's going on to figure it out? Let's take a quick trip to the lunar surface. This is a NASA. A simulation of what the world seems like during a complete eclipse notice the red ring around our planet everywhere. You see that ring is either a sunrise or a Sunset and while it's true that no direct sunlight is reaching the lunar surface at this moment.

Earth's atmosphere is bending the red wavelengths of sunshine round the planet. So that redness you see during a Blood Moon eclipse may be a combination of sunshine from every sunrise and sunset on Earth all happening directly .

So the moon appears red for an equivalent reason that sunrises and sunsets on Earth are red due to a phenomenon called Rayleigh scattering named after British physicist.

John Williams strut also referred to as Rayleigh who discovered it within the late 19th century.

It describes how different colors of sunlight interact with the Earth's atmosphere.

Look at the sky during daytime. For example, it appears blue because air molecules in Earth's atmosphere scatter blue light more easily than In red but during sunrise and sunset the light travels through more of Earth's atmosphere before reaching your eye which has two consequences first.

It means more overall sunlight is scattered making the sun appeared Demmer.

That's why you'll easily gaze upon the Sun at Sunset compared to at noon and secondly more scattering means more blue light is scattered away leaving the redder wavelengths behind.

Similarly the ring around Earth during a complete eclipse is red because the daylight travels through an extended stretch of Earth's atmosphere from one end of the earth to the other.

So instead of fear of blood moon just like the ancient Mayans and Mesopotamians, why not consider it as a romantic moment in any case it is the only time once you can see the sunrise and sunset simultaneously