Heck maybe you could do even do the story about the Stargate program being revealed to the public in this future setting thus allowing to to stay secret i nthe present.
I'd have it be revealed to the public in the present
. I'm tired of all the threats to Earth going undetected or being explained away. Every time a fleet of Gou'auld ships surrounded Earth, fifty thousand amateur star-gazers should've gotten video. Makes no sense to me that it's still secret after all these years.