Here is the full list of all 45 Spacelines from the Far Out achievements.
Reach Gambulon V with a 5-star rating
Reach planet Gambulon V
Reach the Vacation Sector for the first time
Unlock 10 employees
Buy all 3 items at once at Droidley's
Buy ship insurance for the first time
Fly 350 passengers
Prepare 50 meals
Unlock a ship blueprint
Repair 100 broken systems
Nearly miss a comet
Identify 1000 objects in space
Fly 200 passengers
Get a 5-star rating for the first time
Fly a total of 20000 AU
Fly 100 passengers
Explode your ship once
Reach the Gamma Sector for the first time
Have your flight attendant vomit
Acquire your first system upgrade
Unlock your first new employee
Run out of fuel once
Unlock a customization
Complete 5 routes while playing co-op (local or online)
Nail 200 dance moves
Customize your spaceline for the first time
Arrive at the Company Terminal
Complete your first route
Survive the tutorial
Acquire 30 system upgrades
Fly a ship with all 15 classes of systems installed
Unlock 25 customizations
Unlock 50 customizations
Unlock 3 ship blueprints
Unlock 6 ship blueprints
Pass 5 health inspections
Get shut down by the health inspector
Run out of fuel 5 times
Explode your ship 5 times
Exceed your ship's maximum passenger capacity
Have 5 passengers simultaneously satisfied
Clean a toilet or a puddle of puke 30 times
Serve 200 meals
Heal 10 sick passengers
Unlock all achievements