Before, Yorkie agrees that she is tourist like Kelly because they are alive outside the virtual world. Here, Kelly learns that Yorkie did not have a happy life with her family and got in an accident. For Yorkie, San Junipero may be her only chance to find happiness.

Most of the people in San Junipero have already passed over. There were several mentions before that gave a hint that this was a virtual reality game. Here, virtual reality has advanced enough to retain a person's conscious even after death.

Why is the narrator's learning experience in the classroom different from the experience of watching the stars in the night sky?

The narrator is out of the classroom and somewhere outside during nighttime to watch the stars. Since the narrator is looking at the sky in "perfect silence," the narrator is paying more attention than when they were in the classroom. Maybe the experience of watching the stars and space is another way to learn besides listening to lectures in the classroom.

Here, the setting changes.The narrator is not with the professor nor the audience or is moving away from them.

Unaccountable means something that can be explained The narrator does not understand the professor's lectures, so he does not enjoy the lessons like the audience.

The audience claps to show the professor admiration for his lecture.

The learn'd astronomer refers to the narrator's astronomy professor.

The narrator is learning about space through the professor's academic lesson.

This is a turn in the poems mood. The poem is going from a happy and bright mood to a feeling of violence and abandonment.