In the Ultimate Comics: The Ultimates Vol.6 finalle, Captain (Gehenesis) Mahr-Vehl cuts Reed in half with one of his high-powered lasers and sends him hurtling down into a volcano situated on Mahr-Vehl's home Kree planet. Injured from the battle, Ben and Sue get Mahr-Vehl back onto the space-ship and fly back home to earth. But on the way back to earth, they get lost. Thus being continued in a new ongoing series, Ultimate Comics: Fantastic Four. How will they ever get home?
EDIT: The Falcon would be the fourth member and the one flying the huge SHIELD spaceship.
2000-2006: Golden Age of the UU
2007-2009: Age of Loebotomy
2009-2011: Post-Ultimatum Era
2011-????: Silver Age of the UU