This was a very good episode. This episode continues the story with the Ori, and brings back the story of the alien planet from the episode "Icon" from season 8.
This episode had some great action.
I loved the ending when they find out that the Rand fired on the Caledonians, which buried the stargate.
There is only one reason I didn't give it a perfect 10. That's because of the Prometheus being destroyed. It was the first ship that Earth was able to successfully make. And now it's gone, which is very sad. I will miss it.