# List of proposed Solar System probes

This is a list of proposed space probes that are planned to focus on the exploration of the Solar System, ordered by date of spacecraft launch. Launched probes are in the List of Solar System probes and the List of active Solar System probes.

## Planned or scheduled missions

| Mission name | Launch date | Description |
| EscaPADE | Spring 2025 | Two Mars orbiters |
| Tianwen-2 | May 2025 | Asteroid 469219 Kamoʻoalewa sample return, comet 311P/PanSTARRS orbiter |
| Artemis II | April 2026 | 4-person lunar flyby |
| Martian Moons eXploration | 2026 | Martian moon sample return mission |
| Chang'e 7 | 2026 | Lunar south pole lander, rover and flying probe |
| Venus Life Finder | NET summer 2026 | Private Venus atmospheric probe by Rocket Lab and MIT |
| Lunar Polar Exploration Mission | 2026-2028 | Lunar lander and rover |
| Chandrayaan-4 | 2027 | Lunar sample return mission |
| Artemis III | Mid 2027 | 4-person lunar flyby, 2-person lunar landing |
| Luna 26 | 2027 | Lunar orbiter |
| DESTINY$^+$ | 2028 | Asteroid 3200 Phaethon flyby |
| Dragonfly | July 2028 | Titan rotorcraft lander |
| Rosalind Franklin | 2028 | Mars rover, ExoMars |
| Luna 27 | 2028 | Lunar lander |
| Tianwen-3 | 2028 | Mars sample return mission |
| MBR Explorer | 2028 | Flyby mission to seven asteroids |
| Venus Orbiter Mission | 2028 | Venus orbiter |
| Tianwen-4 | September 2029 | Jupiter and Callisto orbiter, Uranus flyby |
| Solar Polar Orbit Observatory | 2029 | High-inclination solar orbiter, Jupiter flyby |
| Comet Interceptor | 2029 | Flyby of an Oort Cloud comet |
| VERITAS | 2029 | Venus orbiter |
| EnVision | 2031 | Venus orbiter |
| Mangalyaan-2 | 2031 | Mars orbiter and lander |
| DAVINCI | 2032 | Venus orbiter and atmospheric probe |

## Proposed missions

| Mission name | Preliminary launch date estimate | Preliminary launch date estimate | Preliminary launch date estimate | Description | Ref(s) |
| Mission name | Estimated launch date | Estimate by | Estimate as of | Description | Ref(s) |
| Shensuo (Interstellar Express) | 2024 | Scientia Sinica Informationis | 2019 | "Voyager-like" mission to outer planets | |
| Beresheet 2 | 2025 | Ramon.Space | 2022 | Lunar lander | |
| NASA-ESA Mars Sample Return | 2027 | ESA | 2023 | Mars sample return mission | |
| Ramses | 2028 | ESA | 2024 | Asteroid orbiter | |
| Tera-hertz Explorer | 2020s | | | Mars orbiter and lander | |
| Venera-D | 2031 | Russian Space Research Institute | 2023 | Venus orbiter and lander | |
| Luna 28 | 2030 | Roscosmos | 2024 | Lunar sample return mission | |
| Uranus Orbiter and Probe | NET 2031 | NASA | 2023 | Uranus orbiter and probe | |
| Interstellar Probe | 2036 | NASA | 2022 | "Voyager on steroids" | |
| Enceladus Orbilander | 2038 | NASA | 2023 | Enceladus orbiter/lander | |

## Suspended missions

The following missions were suspended or cancelled because of political, budgetary, or other reasons. The spacecraft were already assembled at the time of suspension/cancellation, so these missions can be resumed.
| Mission name | Cancellation date | Description | Status and reason |
| VIPER | 2024 | Lunar rover | "NASA stated cost increases, delays to the launch date, and the risks of future cost growth as the reasons to stand down on the mission." NASA announced they would consider "expressions of interest" from industry to use the "VIPER rover system at no cost to the government". In October 2024, VIPER passed all pre-launch tests. |
| Janus | 2023 | Dual asteroids probe | Was expected to be a secondary payload on the Psyche launch. After the delay, it was assessed that Janus wouldn't be able to reach the required trajectory. Both spacecraft were placed into long-term storage. |
| Kazachok | 2022 | Mars lander | Originally part of the joint ExoMars mission with ESA, planned to deliver Rosalind Franklin rover. Mission was cancelled because of the Russian invasion of Ukraine in 2022. Spacecraft was returned to Roscosmos; officials stated that they will launch it without the rover, but no date was given. |