From New Frontiers in the Solar System: An Integrated Exploration Strategy Kuiper Belt Pluto Explorer (realized in New Horizons) Jupiter Polar Orbiter with Probes (led to Juno) Venus In Situ Explorer Lunar South Pole-Aitken Basin Sample Return Mission Comet Surface Sample Return Mission: Comet Astrobiology Exploration Sample Return (CAESAR) (see also the similar OSIRIS-REx, which is planned for a near-Earth object, not a comet.) From Vision and Voyages for Planetary Science in the Decade 2013–2022 Io Volcano Observer Lunar Geophysical Network Saturn Atmospheric Entry Probe Trojan Tour and Rendezvous