How did the Summerians know of all the Planets their orbital lengths and mes and even thier colors 6000 BC?

According to the Summerians the FIRST people to have civilization {direct from hunter gather stage to boot!} they discovered nothing. The Annunaki or the Gods Did. They attribute All their laws and ALL knowledge of science to physical beings that once walked the earth with them. They knew of all the known planets 7000 years ago +1 one more, they knew the orbital lengths and the correct mes of all the planets. They were actually correct about the color of the planets and we were wrong as the voyager just proved us wrong and the summerians correct. They have a map of pangia that looks like a mercator projection. They describe the asteroid belt and know the moon was created via a violent collision with earth in relation to the asteroid belt. They knew 7000 years ago all this and more, they knew that the sun was the center of a solar system, they knew the earth was not the center of all, they knew the earth was round. How? They say the Annunaki of Nibiru or the 10th planet. Movie this!