Galaxy Keeper

Game 1

Newton's disk is tearing itself apart. Hold the outer rotation curve flat — with a budget of a₀, the acceleration scale.

v(r) — measured from the stars

— Newton — your galaxy ┄ flat target

outer flatness —

Level 1

A quiet disk. Find the a₀ that flattens the outer curve.

Hold outer flatness ≥ 90% for 4s — on an honest a₀ budget.

a₀ — how hard the extra pull kicks in —

a₀ budget: —

ApproximateThe gravity is algebraic MOND — g = g_N·ν(g_N/a₀), ν(y)=½+√(¼+1/y) — the same law the live Galaxy Sandbox runs. It is not the rigorous QUMOND field solve (that lives offline, here).

MeasuredThe v(r) curve is binned from the actual star motion every frame — not drawn. Slide a₀ to 0 and Newton comes back and the curve falls: that's why the dark-matter debate exists. This is consistency, not proof. See the full GPU version: the live Galaxy Sandbox →