Nick returned to the underground city and told Aria and Samar about Night Sky Base.
If Nurse Alice was truly the knowledge repository for energy manipulation, it would be much more difficult to get her knowledge.
Sure, she was not completely against humanity, as evidenced by the fact that the other bases still existed, but she was also completely free.
Nurse Alice was most likely the weakest Eternal out of all of them, but she was still an Eternal.
Nick needed to be powerful enough to resist her if he wanted to talk to her.
Luckily, he didn't need to be strong enough to kill her.
Both of them worked for the same being, and both of them knew something that their superior would not tolerate.
As long as she couldn't immediately kill him, Nick could unveil her secret by contacting the Sun.
Of course, she could do the same.
But then, it would be mutually assured destruction, and no side wanted that to happen.
