Saturday, 27 January 2018

What is Super Blood Blue Moon of January 31st,2018 ?

There is a Super Blood Blue Moon coming this weekend. So, let's look what it is briefly.

What is a full moon?
The full moon is a phase of the moon when the Moon appears fully visible from Earth. This occurs when the Earth is located directly between the Sun and the Moon, that is a Lunar Eclipse.

What is a blue moon?
If there are two full moons in a month, then the second one is called the blue moon.

Why it is 'blue'?
It Simply originated from certain usages in literature and astronomers of olden times. It is believed that, someone might have observed this through a polluted sky, such that the moon would have seen bluish.

What is a supermoon?
supermoon is either a full moon or a new moon which is occurring when the moon is closest to earth in its orbit.

Closest to earth means?
The moon orbits Earth in a slightly elliptical orbit. So, the moon would be seen very near at some point, very far at some point as it goes around the earth. So, whenever the moon is very close, we can see it much larger in shape and brighter; 14% larger and 40% brighter.

So, Supermoon: Full moon / New moon with the shortest distance between earth and moon.

What is Blood moon?
The blood moon is nothing, but a red coloration we see over the moon. It is caused due to the shadow of the earth most probably during a lunar eclipse. It isn't actually a scientific term or usage, but a phrase we usually use, whenever we see the moon in red appearance due to the darkness falling over it.

When did we saw this last time?
We are believing that it has occurred before 150 years ago on March 31, 1866

Where to see this better in India?
The southern part of India, especially Kerala state is the best part to view this.

When will be this visible in India?
It is expected to see between 4pm to 9pm, January 31,2018

Where are the observatories in Kerala?
There are Planetariums at Kozhikode (Calicut) and Thiruvananthapuram (Trivandrum)

When is the next chance to see this phenomenon?
December 31, 2028

Astronomy

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