Interplanetary spaceflight is travel between planets usually within a single planetary system.
== Current achievements in interplanetary travel ==Remotely guided space probes have flown by all of the observed planets of the Solar System from Mercury to Neptune, with the New Horizons probe having flown by the dwarf planet Pluto and the Dawn spacecraft currently orbiting the dwarf planet Ceres
 Crewed flights have landed on the Moon and have been planned, from time to time, for Mars, Venus and Mercury

