2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127004This note is devoted to the definition of moduli spaces of rational tropical curves with n marked points. We show that this space has a structure of a smooth tropical variety of dimension n-3. We define the Deligne-Mumford compactification of this space and tropical $ψ$-class divisors.For the Proceedings of the Gokova Geometry/Topology ConferenceAlgebraic GeometryCombinatoricsGeometric TopologySymplectic Geometrytext