MalàStrana said:
ZkinandBonez said:
It has been suggested that these rings might be Star Destroyer docking stations.
As far as adding things we’ve not seen before this at least makes a lot of sense, compared to adding new fighters.

I’m still curious about what that thing hovering in the middle is supposed to be?

It looks like a planet shield (like the one we can see in Star Trek Beyond).
edit: I guess the x-wings destroy it, then the commando led by Erso can land on the planet, get the plans, leave, etc.
Turns out they were in fact shield gates;

From Entertainment Weekly:
What you’re looking at is the Shield Gate, and the world below is Scarif, a tropical planet that is one of the Empire’s key military bases. Think of it as a galactic Los Alamos, the top-secret desert town where scientists and engineers built the first nuclear bomb during World War II.
Scarif is a gigantic version of that — a remote weapons development facility that is so precious to the Emperor that the entire planet is covered by an impenetrable force field.
“You can see the blue sheen surrounding the entire planet,” Rogue One co-producer John Swartz says. “The shield gate is the security. As Imperial ships and cargo comes through, it punches a hole in the shield so they can pass. The gate officer gives clearances as they give out their call signs.”
Scarif is a key part of what the filmmakers call “the Imperial security complex,” he added, making it the home base of Ben Mendelsohn’s Director Orson Krennic, head of the Empire’s special weapons division.
“It’s part of their military industrial complex. It’s not necessarily where the Death Star was constructed, but a lot of military research goes on there,” Swartz says. “That’s why Krennic spends time there. It’s the site of research, structural engineering, munitions and manufacturing, all rolled into one facility.”
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