Aryan ancestry:
Think Iran. In the time of Babylon, most Babylonian subjects were of fair complexion, with light colored eyes, and hair.
Some of these people live on in Eastern Turkey, Iraq, and Iran to this day. Visit and see for yourself, many there have blue eyes, fairer skin, and even lighter hair.
Verbally put Iran and Aryan together. Their verbal origins are the same, along with their genetic lineages of the people who spoke those words.
This was thousands of years ago, and since many factors have changed the racial landscape of the region, including the Muslim expansion, the Mongol invasions, and persecution of lighter toned peoples in the area, as well as the genetic dominant traits of dark hair and dark eyes.
But where did these fair skinned peoples come from before Babylon? Many of thousands of years before Babylon, think about 10-20 thousand years ago, a people descended from the one. It is not clear where the one lived or more appropriately landed. Many records say Tibet. This is why Hitler was so intent of finding the occult knowledge of Tibet, and indeed he did find many things that even to this day the descendants keep secret.
The first tribe of descendants of the one left tibet, and settled in what is know the caucuses region in southern Russia. This is why all white peoples are known as Caucasians.