Stargate Atlantis series have explored ascension in many episodes..
In this episode, they talks about the fears that the people of this world held which created a destructive entity, a force that disrupt their way of life.. When they realized  that they have created this for themselves, they were able to let go of their burdens.

I have not been able to find the English version of this clip...

Here is a link to Season 2 Episode 12 Epiphany on Youtube