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