That's a good question. I asked a few people I know about its origin and they said the Hubble or the Shuttle took it. That would be wrong as the only way to get a pretty spiral picture of our galaxy like that is from outside it.
Guidestones and conspiracies seem to go hand in hand, if human history is to be believed. But the topic of discussion does not take you too far behind in time, as the artifacts in question happen to be the Georgia Guidestones.
Here is how you stop mass shootings overtime there is a mindless shooting with no motive or a bomb you exterminate 5 politician and their family or members of the CIA hiracy or the major bankers or members of the media within 6 months it will stop!