http://www.flagofplanetearth.com/#intro-shift
Not an unattractive design in my view.
He provides a blazon (which I suspect is an English translation of the original Swedish):
Centered on an azure field, seven circles of silver interlaced, creating a flower.
Would anyone care to try a more heraldic blazon in English?
The Flagmakers Newsletter, where I found this link, asks the following pertinent questions: where and when would an Earth flag fly and is it necessary?
https://dub121.mail.live.com/?tid=cmcS2k_lsP5RGaNAAiZMJDTg2&fid=flinbox