When did Stargate end?

Answer 1

Last episode name of tenth season was 10x20Unending.

Story plot: Asgard decide to share knowledge with humans because they are about to make a mass-suicide. An ori ship started to hunt the "Odyssey" and the team ran out of time to come up with a solution. Samantha Carter used the Asgard time dilation technology to slow down time to plan an escape from their certain destruction from an oncoming beam. Sam found the solution but it was too late and they were in the ship until they became old. Daniel fell in love with Vala. Sam learned to play the cello. Mitchell had the first signs of Alzheimer. In the end Sam found a solution to go back in time. But someone had to stay old to tell the solution to other SG-1 members (That will forget everything). Teal'c accepted. He stepped in a force field that isolated him from the time dilatation. When he got back in time, Teal'c immediately told the solution to Carter and the team was saved.

Answer 2

Warning LOTS of spoilers :)

On TV it was aired in 2 parts.

When the Wraith and Humans attacked the Assurans, Todd stole some ZPMs from them.

In the final episode he comes to Atlantis and tells them that one of his men used a ZPM to upgrade a Hive ship. The expedition sends the Daedalus to attack the hive while it is unfinished. However when they arrive the hive is already ready and the Daedalus is damaged but before the Hive destroys it a massage from a parallel reality is received. The massage was the coordinates of Earth. The Hive departs to Earth and the expedition start to think how to stop it.

Two earth ships are waiting in ambush half way to Earth. But they are defeated by the advanced hive ship. The Odyssey with its ZPM is nowhere to be seen, they don't explain why is it missing, just say that its on a mission. The expedition forces Todd to give them ZPMs to power Atlantis. Using 3 of em they power the city's hyperspace drive and go to Earth. Atlantis SG team ends up on the Hive and trays to destroy the ship. Meanwhile Atlantis arrives and defends Earth from the hive. At the end the Hive blows up, and there is a happy end!

Answer 3

because Teyla and Ronon stayed in the Pegasus Galaxy while while what was left of the original expedition team from earth went back to earth flying in Atlantis itself to protect earth from the new wraith mothership. Atlantis is now on earth and they did not return. that is why the episodes are cancelled for now. there should be a movie coming out to deal with this problem and the series has a chance to come back

Answer 4

The show ended by the release of a movie called the Ark of Truth. In this movie SG-1 goes to Abidos to find the Ark of Truth. It was not there, however later in the movie they managed to find it. The effect of this Ark is to make someone who looks in it believe that the Ori are false gods. After getting the head priest to look into the Ark none of the priests believe in the Ori anymore, so the Ori (Read: Adria, since she's the only one left) are seriously weakened. Now she's weak enough for Morgan le Fay to fight her.

Answer 5

Stargate Atlantis ended 2008, Stargate SG-1 ended 2006 and Stargate Universe starts soon! :D