Let me assure you that I was not the one who placed it there. Furthermore, He who did has not confided his motives to me, so I'm afraid I have to ask you to address your question directly to Him.
To commemorate Hercules' victory over defeating the hydra.
His hunting dog
There isn't any half man and half scorpion monster constellation in the night sky. There is, however, a half man and half horse.
canis major
There is no such constellation
the scorpion
It is placed in the sky because there is not enough room for it on Earth!
There is no such thing as an "astronomy sign". There is a constellation called Scorpion, and there are astrologicalsigns.
His hunting dog
There isn't any half man and half scorpion monster constellation in the night sky. There is, however, a half man and half horse.
This is because the stars in the sky look like the outline of a Scorpion.
Scorpius is the constellation that is shaped as a scorpion.
The Scorpion is a scorpion and he was sent by a greek god to kill Orion and they both got placed in the sky. So Scorpion got its name because it was a scorpion.
canis major
Sagittarius the Archer, is right behind Scorpius the Scorpion. both visible in the summer sky - south if you live in the Northern Hemisphere.
The purpose of the myth is to explain who the constellation was placed in the sky.
a scorpion
Antares is an important star in the constellation of the Scorpion.