Fringe and the Dream Logic

If you have not watched Fringe S02E05 I suggest you don't read any further.

You've been warned.

Wikipedia said: "At the end of the episode, Peter has a nightmare that he can't remember. The nightmare shows a poster of Space Shuttle Challenger in a mission that never occurred in our reality, suggesting the nightmare is a memory from an alternate reality."

I have not realized that when I first watched the episode!

After checking it out once again, I saw a poster on Peter's wall:

"Challenger mission 11 - June 28 1984"

But (in our reality) Space Shuttle Challenger had only done 10 missions. The tenth (and last one) was this:

"January 28 1986 - Shuttle disintegrated after launch, killing all seven astronauts on board".

I remember that day...