Recent presentations: Ejection-collision orbits in some models of two degrees of freedom in Celestial Mechanics Existence of ejection-collision orbits in some models. Hamsys 2018, (Bellaterra - Spain) Dynamical generation of galactic bridges and tails using a parabolic restricted three-body problem Modelling galaxy close encounters with a parabolic restricted 3 body model Barcelona, 2017 On central configurations of twisted rings Central configurations of two twisted regular n-gons HamSys, Bellaterra, June 2014 Homo/heteroclinic connections between periodic orbits and resonant transitions in the RTBP DYSCA, UAM, México, June 2013 Transport in the Solar System and unstable orbits Dynamical System Seminar of the Department of Mathematics of Boston University, 2013