He’s looking at it upside down. It means: “we’re watching you”
Unless it means something else in their language.
The Nebulons still needed to work on their gloating world conqueror emoji.
If we do have aliens on Earth, the govt would be sure to hide and lie about it.
Appearances can be deceiving.
Often, deliberately so.
They may be friendly or they may want to “serve man!”
The next step is the aliens branding us all with that same happy symbol. Then, into the stew pot.
I guess crop circles were too complicated for the current mob.