Highway Analogy Simulation
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Zenodo Open Access
Sim Suite Code
DOI: 10.5281/zenodo.19124509
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BFUT · The Highway Analogy · Gravitational Sorting

Why Galaxies Appear to Recede:
The Highway That Sorts Itself

Most vehicles flow in parallel streams - same lane, same speed, never colliding, forever. A minority travel at angles and will cross a stream, causing one collision then disappearing. From the observer at the centre, what remains are mostly vehicles moving away - faster ones further. No force pushed them. No road expanded. The approaching ones are simply gone.

Set your speed,
then press Play

All vehicles are already on screen. Streams will flow forever. Crossing vehicles will collide once - then both are gone.

READY - SET SPEED AND PRESS PLAY
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Vehicles
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Remaining
0
Collisions
0
Cycles
What This Simulation Shows
The vehicles that remain are those whose paths never crossed an incompatible trajectory. They were always going to survive. The ones on collision courses are simply gone.

This is the only mechanism BFUT requires to explain the observed recession of galaxies. Galaxies on incompatible trajectories collided and merged across trillions of years. What we observe today are the sorted survivors - those whose paths were always compatible. No expanding space. No dark energy. Pure sorting.
Controls
Speed 1×
1× = slow, watch each collision clearly
Each vehicle represents a galaxy. The highway represents space. Vehicles on incompatible paths collide and disappear. What remains are the sorted survivors.
Colour Key
Fast stream vehicle
Stream vehicle
Stream vehicle (opposite direction)
Crossing vehicle - on a collision course
Collision - both about to disappear
What to Watch
▸Stream vehicles on the same lane share exact speed - they never catch each other, never collide
▸Crossing vehicles travel diagonally - each is aimed at a specific stream vehicle
▸When a crossing vehicle meets its target: explosion, both gone
▸All vehicles wrap from one edge to the opposite - infinite road
▸After all crossing vehicles are gone, only the sorted streams remain - the final sorted state of the universe
Standard Model Conclusion
"Survivors all moving away - the road must be expanding"
ΛCDM observes the sorted final state - most galaxies receding, velocity proportional to distance - and concludes that space itself is stretching. This requires dark energy comprising 68% of the universe to explain why the stretching appears to accelerate. Dark energy has never been detected in any experiment in four decades of dedicated effort. Not once.
BFUT Conclusion
"The ones coming towards us are already gone"
BFUT observes the same sorted state and concludes: the incompatible trajectories eliminated themselves across trillions of years. Faster survivors are further because they were already moving faster - that is the complete explanation. Velocity proportional to distance is what survival statistics look like from inside the sorted population. No dark energy. No expansion. No force required.