Linked from
The 16 pages that link to Asymptotic freedom, each with the reason it gives.
Quantum chromodynamicsRelated: It makes quarks behave nearly freely at short distances.
Strong interactionRelated: It accounts for quarks behaving nearly freely in high-energy collisions.
Color chargeRelated: At short distances, color-charged quarks interact more weakly.
Bjorken scalingRelated: It makes the parton picture increasingly useful at large momentum transfer.
Frank WilczekBroader topic: This is the phenomenon Wilczek, Gross, and Politzer discovered.
PartonRelated: It explains why partons can behave nearly freely during hard collisions.