No speed cheats.
One open-page second earns one second in the Earth frame. Proper acceleration, finite exhaust velocity and the two clocks are modelled separately.
EARTH / ORBITAL CONSTRUCTIONHOME, FOR NOW.
The Patient
CONSTRUCTION IN PROGRESS · DRAG TO INSPECT
LUNAR FLYBY
A little closer.
Space takes time. This is where yours begins.The orbital preview is unavailable on this device. Your assembly controls and voyage are ready below.
REAL MODE / POWERED FLIGHT
The Patient
You have barely left home.
0d 00:00:00The clock you are waiting by
0d 00:00:00The clock the crew lives by
0 m/s0% of light speed
0 m0 kilometres from departure
Drag to look around
DEEP SPACE OBSERVATION
Live voyage ? 1,000 km closest passesINNER SOLAR SYSTEM1 REAL SECOND = 1 EARTH SECOND
Drag to orbit the ship camera · visual scale is illustrative
The long way out
What relativity is doing
ACCUMULATED CLOCK DIFFERENCE0 sEarth time minus ship time
LORENTZ FACTOR · γ1.000000000Earth dt / ship dτ, instantaneously
ACTUAL REST MASS—Does not increase just from speed
EARTH-FRAME ENERGY / c²—γm, sometimes called “relativistic mass”
REMAINING DISTANCE / γ—Instantaneous comoving-frame separation
EARTH-FRAME KINETIC ENERGY0 J(γ − 1)mc² · excludes rest energy
The ship's log
SHIP-TIME ENTRIESA FIELD GUIDE TO PATIENCE
The science. The fiction.
The fine print.
A citation should tell you what we know — and what we made up.
A farm isn't a miracle.
Closed ecosystems, age limits, births and shield wear use simplified game rules. Their assumptions are not scientific predictions.
Mostly, nothing happens.
Planetary distance markers do not move into convenient alignment. Our ordered exhibit is an unfolded ruler, not an astronomical trajectory.
Sources & reading room
Reference registry · version 1.0HOW FAR DID YOU GET?
Those who went before.
Completed voyages, saved in this browser. Separate universes deserve separate records.
A SHARED TRAIL THROUGH SPACE.
A record is finalised only when the entire crew has died. Reaching Alpha Centauri parks a sci-fi vessel but does not stop its life-support clock. Abandoned voyages do not score. Browser saves are editable and are not an anti-cheat leaderboard.