The Theory Of The Stargate
Most stargates have "D.H.D (Dialing Home Device), but some like S.G.C has a control room where gatetravel is recorded. "Stargate" Russia's "D.H.D" and thats when "Teal'c" is trapped in the memory of the "Stargate". It's like a computer storing data and that's dangerous because any offworld or any incoming wormhole travels to the person will not materialize. Another idea would be "Naquada" exposure which cause radiation. the "Iris" is another whole meaning, The "Iris" is like a shield to block unidentified gatetravel. It kills anyone 10 of a micrometers away from the "Iris". It also blocks some radiation "Chain Reaction".

Stargate Atlantis
The SGC ordered special people to explore the "Pegasus Galaxy". What comes out to be a big mistake. Atlantis expedition team is stuck in the "Pegasus Galaxy" with one "Z.P.M" running and 2 "Z.P.M" depleted. But the good thing the city can surface and meet new race and new planets around the "Pegasus Galaxy". The technology is so advanced some could ride the "Puddle Jumper" whoever has ancient genes and the the city can allow Ancient Genes to let doors open ,to self defense mechanism around the city like the shield. Since the "Z.P.M" are depleted it can only stay for a few seconds to the earths Stargate "Letters From Pegasus". With expedition team to save the city from a horrible enemy. The "Wraith" .

Goa'uld and Jaffas Symbiote
"Jaffas" are different from the "Goa'uld" in many ways. One is where there going to have a rebellion "Reckoning pt.1" and "Reckoning pt.2". "Goa'uld" difference are having leaders called "System Lords". These "System Lords" may include previous seen lords from the Sg-1 team "Fair Game". The "Jaffa" and "Goa'uld" are affected inside there bodies called "Symbiotes". "Goa'uld Symbiote" are like hosts such as leeches and other suckers. The good thing they do not age and dont get sick from diseases. The "Jaffa" "Symbiote" goes inside from the chest and "Goa'uld" hosts goes in by the neck. The holder now must take care of there "Symbiote" to mature inside the body. Same as "Goa'uld" ,but "Goa'uld" host goes and target the spinal cord to control the peripheral endings of the spinal cord. But when both "Jaffa" and "Goa'uld" have glowing eyes they are now controlled by there "Symbiotes". Its having both minds in one body. Now if a "Goa'uld" fights and gets injured there "Symbiotes" heal them same as "Jaffas" ,but it will take a while. Finally if the holder of the "Symbiote" takes out the "Symbiote" they both die.

Wisdom Of The Jaffa
Wisdom of the "Jaffa" is different from others such as Earthlings. The episode "The Warrior" wisdom is to let his own people die to be from the "Goa'uld. Words such as these are important to the "Jaffa" rebellion and "Jaffa" nation because they sacrifice themselves for freedom against "Goa'uld" enslavement "Reckoning pt.1","Reckoning pt.2","The Warrior". In the end of "Reckoning pt.2" the rebellious "Jaffas" won. "Threads" is the part where the "Jaffas" destroy the weapon that desrtoyed the "Replicators" so "Ba'al can't plan to steal the weapon.

About The Stargate
The "Stargate" is an object first created by the Ancients and set on other parts of the Galaxy The "Stargate" is made form "Naquada" which can cause exposure to the high level of radiation. It causes a catastrophic explosion to a high concentration from Nutrinos. The first gate is found from Giza Egypt. Later on in the high mountains of Colorado the Stargate Program started by "Dr. Daniel Jackson" and "General Jack O'Neil".