# NASA PROMISE lunar exploration mission proposal

> Live situation record from CLSTR: https://clstr.news/situations/nasa-promise-lunar-exploration-mission-proposal
> Updated: 2026-08-09T23:08:56.000Z. Sources: 4. Developments: 2.

NASA has proposed a new lunar exploration mission titled PROMISE (Polar Rover for Observation, Mapping, and In-Situ Exploration). The mission concept involves repurposing a hybrid engineering model—previously known as OPTIMISM—based on the designs of the Perseverance and Curiosity Mars rovers.

A central component of the PROMISE rover is the use of a Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) powered by plutonium. This power source enables the rover to operate during the lunar night and within permanently shadowed regions without relying on sunlight. The mission's primary objectives include investigating surface characteristics and water ice deposits at the lunar south pole to support long-term human presence and a sustainable lunar economy.

## Timeline

### 2026-08-09: NASA explores Mars with Perseverance and proposes lunar PROMISE mission

NASA's Perseverance rover continues its Mars exploration while a new proposal, PROMISE, aims to send a modified rover version to the Moon's south pole to study water ice and surface conditions.

2 sources. https://clstr.news/cluster/nasa-explores-mars-with-perseverance-and-proposes-lunar-promise-mission

### 2026-08-06: NASA introduces PROMISE rover for lunar south pole exploration

NASA has introduced PROMISE, a lunar rover designed to explore the Moon's south pole using radioisotope power to operate in permanent shadow and survive lunar nights.

2 sources. https://clstr.news/cluster/nasa-introduces-promise-rover-for-lunar-south-pole-exploration

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Cite as: NASA PROMISE lunar exploration mission proposal. CLSTR, https://clstr.news/situations/nasa-promise-lunar-exploration-mission-proposal