NASA is elevating its digital platforms for the benefit of all by revamping its flagship and science websites, adding its first on-demand streaming service, and upgrading the NASA app. With these changes, everyone will have access to a new world of content from the space agency.
ok, so the word “plus” is used to indicate that it is a streaming service. Got it
Sure, why not. That’s all it means in the context of Disney+.
From their generic FAQ:
from my limited perspective, the word “plus” is to indicate the rest studios/companies that are included in the Disney (parent) company
That’s actually what it has kinda came to mean. Lots of Streaming services are called “Plus”, even if they don’t have a separate non-free version.