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Well, when the sun is between a particular constellation and the earth, it is said that the sun is in that constellation. Like when you were born, the sun has been between the Libra constellation and the earth.

The answer to your question is,
you know that the earth rotates 360° everyday. So for each constellation to rise up, the earth has to rotate 30°. That means, when the earth rotates 30°, a constellation will rise up in the Eastern horizon.

    So the earth rotates 360°, and there are 12 constellations,

360°/12 = 30°

I hope you understood.

I'm a Scorpius :D

Oh.. Sorry.. It's very simple, but I didn't understand earlier.
Now it's clear to me. :D
But why do think that horoscope presents the characteristics of people and the future ?

Like, "Today is a lucky day for all Libras. They will spend happy times with their friends."
Something like this.

I'm happy about that :D

Yeah. That's a big question for me too. As I've heard, it's according to astrology. But I don't believe in them. It's no use knowing the future. What happens is to be happened.
I don't even read or listen to them.
One time, it was said that scorpius's will have a fever. After reading it it echoed in my mind and then I got sick.

But there is something related with fortunetelling and astrology. I don't know about those things that much.

Haha.. I figured you would say that..

I think that the fortune telling is according to database of many people.
Let me make it simple with example of Libras.

Scientist examined many Libras.
They saw that the majority of people face fever on the first of Libra Constellation. For example, 50% gets sick, 20% spends happy time, 20% face bad time and other 10% face other kinds of thing.

That's why Horoscope says that Libra's are likely to get sick on the first day of constellation.

Probably something similar happened :D

Yeah. Fortune telling is such a stupid thing.

But there are some people who tell about the future with the use of gods.
Have you heard about John of God? It is said that patients come to him and a god whispers the sickness to him and the correct meds to give.
Like this, some people tells fortune with the help of god.

I don't know about it.
We can't prove that anything is 100% correct or 100% wrong.
People can't hear God whispering to him neither they can prove he is telling the truth.
Also neither they can prove he is lying.

I wonder if you are understanding what I am trying to say.

Yeah I understand. Those things are a mystery. It makes me go crazy just by thinking about it 😵

Anyway, another series about the space is on now

Ok.. I will check it out :)