See the other sectors

Hello,

I am in an advanced game (turn 100)

I have already unlocked the "Subspace Scanning" and "Subspace Streaming" technologies

Can you tell me why I can't see the other sectors? I looked in the Galactepedia but no info

This corresponds to the mission "Brave New Universe"

There are 9 AI in total in the game, I just came across the Altarian republic (which I absorbed)

Here is the screenshot of my game

I created a 2nd free game in parallel and I think I have exactly the same problem