They're certainly hundreds of millions of years old in my knowing. I can actually recall being around at Sirius C when it exploded 120 million years ago which is where they came from. They knew radical change was going to happen and found a way of ditching their karma and moving into the 4th Dimension. Although many didn't make it. It was extremely traumatic as I'm aware. They then took on a kind of energetic synthetic form in the 4D. They disconnected themselves from the usual cycle of death and rebirth. Although its also my awareness that some do reintegrate over time. It's now really a dieing and degenerating race from where they once were. The grey form is merely of shadow of what they once were. I'm also aware of the reptilian 4D form which is another 'off-shoot'. And I'm aware of their ultimate desires to reintegrate and realign with the source. But a leopard doesn't change its spots overnight. And also it depends on humanity. If the group consciousness can let go of trying to control life, it'll let go of the manifestation of that control. Open