The International Flag of Planet Earth

That one is a lot more interesting, though it's basically just a map, which is atypical for flags.

The OP's flag is very abstract. Presumably, any other alien race also strives for unity and lives.

It's hard to create a better flag without actually knowing aliens and having some idea of commonalities and differences with humanity. Indeed, maybe we need a flag for humanity, not planet earth?

That is a brilliant. IMHO a reversed out guilloche graphic like the one on the spacesuit is to hard to duplicate or draw.

It's an interesting start, but the balance feels a bit off. A bit too yonic in the center and the way the rings overlap with negative space makes it look worse at small sizes. Realistically speaking a flag is in many ways the way you are different from other flags but this raises the question: Who is looking at the flag of Earth? Who does the flag not represent? In the short term I'd argue it's Venusians or Lunarian settlers. To them a flag that represents origins is more important. I like the idea of a blue background symbolizing water / the earth sky, and the primary molecule that makes up our actual tissue, but the symbol in the middle shouldn't be based on circles. All planetary life would want to use a circle. Especially as the flag for the first planet that humans arise from, it's weak.

In the long term the symbol for Earthlings may even be observed by aliens. In what ways will we be different from them? The flag may even be used as a symbol for other Earth species like Dolphins once we get the technology to communicate with them effectively or to artificially increase their intelligence.

polish flag should be white over red.

Uh oh, world flag? What`s next a universal P2P crypto currency to be used across nations...? Smells like NWO reptilian agenda is advancing :-) Seriously though, this is really nice initiative.