  We report that the saturation/CGC model of gluon distribution is unstable
under action of the chaotic solution in a nonlinear QCD evolution equation, and
it evolves to the distribution with a sharp peak at the critical momentum. We
find that this gluon condensation is caused by a new kind of
shadowing-antishadowing effects, and it leads to a series of unexpected effects
in high energy hadron collisions including astrophysical events. For example,
the extremely intense fluctuations in the transverse-momentum and rapidity
distributions of the gluon jets present the gluon-jet bursts; a sudden increase
of the proton-proton cross sections may fill the GZK suppression; the blocking
QCD evolution will restrict the maximum available energy of the hadron-hadron
colliders.
