%0 Journal Article %T The mixmaster universe is unambiguously chaotic %A Neil J. Cornish %A Janna J. Levin %J Physics %D 1997 %I arXiv %X The Mixmaster or Bianchi IX cosmological model has become one of the archetypal settings for studying gravitational dynamics. The past decade has seen a vigourous debate about whether or not the Mixmaster's dynamics is chaotic. In this talk we review our recent work in uncovering a chaotic invariant set of orbits in the Mixmaster phase space, and how we used this discovery to prove the dynamics is chaotic. %U http://arxiv.org/abs/gr-qc/9709037v1