The Dog Star

Sirius – The Dog Star is the brightest star in the night sky. It has been known as the Dog Star for thousands of years. Who named it and why?
If you have never thought about this before, you may not understand just how interesting this question is.
In ancient Egypt they referred to Sirius as the Dog Star, they also have depictions of humans with the heads of dogs carved into their pyramids and ancient stone tablets. It is even speculated that before it was changed by the Pharaoh the Sphinx originally had the head of a dog.
Why did ancient people hold the dog in such high esteem and carve and paint pictures of people with attributes of dogs? There are even pictures, hieroglyphics and cuneiforms showing humanoids with the heads of dogs wearing helmets, like ancient astronauts.
Sumerians and Egyptians referred to Sirius as the Dog Star, the Chinese referred to Sirius as the Celestial Wolf. The Seri and Tohono O’odham called Sirius the Dog, the Blackfoot called it Dogface, the Cherokee called it the Dog Star and the Pawnee referred to Sirius as the Wolf or Coyote Star. The Alaskan Inuit called Sirius the Moon Dog.
Why? How is it possible for so many different people and different cultures in completely different parts of the planet; that had no proven interaction or communication refer to a Star by the same name?
The Dogon Tribe in Africa has worshipped the Dog Star for centuries. They have ancient cave paintings depicting the Sirius Star System showing Sirius A, Sirius B as well as Sirius C in the correct positions as well as their correct orbits. The Dogon people say that visitors from the Sirius Star system came to Earth long ago and helped humans. They say these visitors were dog people.
Part of the mystery is how this primitive people can even know about the Dog Star or where it is located and length of orbits. The Dogon people have drawings of this system that date back centuries. Modern scientists have only suspected the existence of Sirius B for 100 years or so and only just proved its existence in the last century. The Dogon people don’t even have glasses much less telescopes.
Although they have not been able to see it or even prove that it exists, astronomers now believe Sirius C exists.
The Dogon people believe that when we die here on Earth, human spirits return to Sirius C from where we came.
Ancient Sumerians have cuneiforms showing our Solar system with 10 planets. They knew we had 10 planets 6000 years ago. Astronomers just proved the existence of a 10th. planet in 2005. Now that alone is fantastic enough but it actually gets better. The Sumerians not only knew there were 10 planets in our Solar System but, they didn’t call the newly discovered Eris the 10th. Planet, they called it the first!
They say they learned about the Universe and our Solar system from the Annunaki who were ancient extraterrestrial visitors to our planet for the purpose of mining gold. The Annunaki counted our planets as they came into our Solar System not looking out from Earth.