Yes, SGU is being renewed for a third season.
No.
Stargate SG1Stargate AtlantisStargate Universe
Stargate Universe was created on 2009-10-02.
Faith - Stargate Universe - was created on 2010-04-16.
Blockade - Stargate Universe - was created on 2011-05-02.
Gauntlet - Stargate Universe - was created on 2011-05-09.
Sabotage - Stargate Universe - was created on 2010-05-07.
Stargate Universe season 2 is currently airing on the SyFy channel. It has not been announced if Stargate Universe has been renewed for a third season.
Stargate Universe chronicles the adventures of an exploration team ~ see related link below .
The last episode of Stargate: Universe was Season 2, episode 20, "Gauntlet."
After season 10, MGM Studios announced there was going to be 3 Stargate movies. So far only 2 movies have been produced- Stargate Continuum and Stargate: The Ark of Truth. Stargate Atlantis series will also be continued with a movie (working title- Stargate: Extinction).
Jason Momoa is not a regular Stargate Universe star.