In the future when we advance to the proper technological level and have personal spacecraft, Im sure our tradition of "street artists" will continue. Renegade Earthlings will also be among the pack making crop circles as we are out zipping about distant planets in search of some thing to relieve our boredom or just for the thrill of it.
I can comprehend a spacecraft being able to hover stationary enough to make crop circles and much like our ink jet printers of today, the image would radiate from a single point only on the spacecraft, regardless of what type of beam was being used.
Why just circles?. With that scenario you would be limited to circles. Even with the advanced maneuverability that the Aliens have demonstrated, it would be woefully inadequate to produce a piece of Alien street art beyond the circles and overlapping circles that we see.
Im sure there are either laws or morals (I prefer to believe morals), that dictate what can and cant be done. They dont do any permanant damage. They dont disclose any information about who made them and they dont get caught making them. WE can speculate until a spaceship lands in our front yard about the meaning of each one but individually i dony think they have any meaning. Collectively, I think they are nothing more than a "Hello! we are here" statement preparing us for the day that we are ready to accept that they exist.
In the past I have said that when a high enough percentage of the population believes and will be welcoming then they will make themselves known but over the last few years i feel more like the discord is with the Governments of the earth not the people. As we continue to raise our vibration it will become harder and harder for the Government to exist vibrating out of tune with the people so we can and will make a difference The strides we make are small but just like the visual rings of any vibration the incremental step is short but the product of the vibration becomes more.
Should an intelligent form of life be sending us earthlings messages, then what my simply mind tells me after seeing this artwork is this: "We come as an alliance of six star systems containing many unified nations under one one mission to planet earth."
LOVE your interpretation David. Yes, I get something similar too - that it's the flowering of a YOUnifed Cosmic Alliance of some sort...one that our solar system has now been invited to join. I see the main flower as being symbolic of our galaxy, the six 'constellations' - the participating (or main) star systems, and the design - our 'invitation'. It's like a galactic hand reaching out to us from the YOUniverse...
How we choose to RSVP is purely up to us.
And our intent will be revealed through our thoughts, words & deeds.
Our task is to remain lucid (consciously aware) through these whirling times.