In "Centar 9: Wormhole" by Greg Shelton, a mind-bending expedition into an unstable wormhole thrusts a team of explorers into an alien dimension, where survival becomes a relentless battle. 

In "Centar 9: New World," Greg Shelton propels readers into an immersive sci-fi landscape, where a group of brave explorers faces unknown perils to unlock the mysteries of a hidden realm. 

"Centar 9: Lost Crew" by Greg Shelton takes readers on a thrilling sci-fi odyssey as a courageous crew battles against unknown forces in an unforgiving cosmos. 

Greg Shelton's "Centar 9: Crash Landing" hurtles readers into a heart-pounding sci-fi adventure where survivors must navigate treacherous terrain and face unknown dangers for a chance of rescue.