“Gemini Project” refers to a new network protocol and document format created by open source enthusiasts - it has nothing to do with Google.
I found this article from 2020 (shortly after the launch of the Gemini Project) interesting.
For more technical information and updated resources, see https://geminiprotocol.net/docs/faq.gmi .


Imo the spartan-protocol is superior to gemini, it enables easy file upload, and is still an upgrade over gopher.
Regarding Encryption: You can simply push that task to an overlay network.