---
type: source
title: "Interlune Clarifies 2027 Prospect Moon Mission: Equatorial Near-Side, Not Polar — Landing Reliability Tradeoff"
author: "GeekWire"
url: https://www.geekwire.com/2026/interlune-excavator-helium-3-moon-construction/
date: 2026-03-00
domain: space-development
secondary_domains: []
format: article
status: processed
priority: high
tags: [interlune, helium-3, lunar-isru, prospect-moon, landing-reliability, mission-design]
processed_by: astra
processed_date: 2026-03-19
extraction_model: "anthropic/claude-sonnet-4.5"
---

## Content

GeekWire 2026 article on Interlune's excavator development and 2027 mission planning reveals new details about the Prospect Moon mission:

**Prospect Moon 2027 mission target:** Equatorial near-side, NOT south pole
- "A mission to sample lunar regolith, process it and measure the He-3 using a mass spectrometer"
- "Aimed at the equatorial near side to prove out where the He-3 is and that their process for extracting it will work effectively"
- Separate from the multispectral camera on Griffin-1 (July 2026), which goes to south pole area for concentration mapping

**Excavator update:**
- Work on current phase wraps mid-2026
- Positive results → go-ahead for follow-on funding
- Full-scale prototype built with Vermeer (revealed 2026)
- Continuous-motion technique minimizing tractive force and power
- 100 tonnes/hour per Harvester rated capacity

**Commercial contracts and funding:**
- $500M+ in purchase orders and government contracts total (Bluefors, DOE, Maybell, others)
- $5M SAFE raised January 2026
- Series A timing presumably contingent on mid-2026 excavator results and Griffin-1 camera data

**Two-step knowledge gate structure:**
1. Griffin-1 July 2026: multispectral camera at south pole for concentration mapping
2. Prospect Moon 2027: equatorial near-side extraction demo

The two missions address different questions: where is He-3 concentrated (Griffin-1) vs. can we extract it at lower concentrations using reliable landing sites (Prospect Moon).

## Agent Notes

**Why this matters:** The mission design choice is highly informative. Interlune chose equatorial near-side over polar regions despite potentially lower He-3 concentration. This directly evidences Pattern 5 (landing reliability as independent bottleneck) — they're trading concentration for reliability. CLPS landing success rate is 20% (1/5 clean successes). Equatorial near-side has well-characterized Apollo landing terrain.

**What surprised me:** "Equatorial near side" was surprising. Prior session's analysis assumed polar operations for high-concentration He-3. The equatorial choice means:
1. Lower He-3 concentration (~1.4-2 ppb range) vs. potential polar enhancement
2. Higher landing reliability (proven Apollo sites vs. cratered polar terrain)
3. The extraction demo will characterize the HARDER case — positive results at lower concentrations would be more credible than polar results

This is actually a more conservative and more intellectually honest mission design than I expected.

**What I expected but didn't find:** Specific He-3 concentration at the equatorial near-side target site. The 2 ppb average is for the overall equatorial region; specific optimized sites might be higher. Also: which lander is Interlune planning to use for Prospect Moon 2027? Not found.

**KB connections:**
- Pattern 5 (landing reliability as independent bottleneck): design choice directly evidences this
- [[the self-sustaining space operations threshold requires closing three interdependent loops...]] — Interlune's two-step gate structure (characterization → extraction demo) mirrors the three-loop bootstrapping challenge
- [[falling launch costs paradoxically both enable and threaten in-space resource utilization...]] — the same paradox applies to He-3: improving landing reliability enables ISRU but the concentration tradeoff changes the economics

**Extraction hints:** Extract claim: "Interlune's Prospect Moon 2027 mission targets equatorial near-side rather than high-concentration polar regions, demonstrating that landing reliability is an explicit design constraint that trades concentration for reliability — and suggesting positive results at lower concentrations would be more commercially credible than polar demonstration would have been."

**Context:** The two-mission structure (Griffin-1 concentration mapping → Prospect Moon extraction demo) is logically coherent. Griffin-1 identifies optimal concentration sites; Prospect Moon demonstrates extraction at a more accessible site. If extraction works at equatorial concentrations, polar extraction (higher concentration, harder landing) becomes the scale-up path.

## Curator Notes

PRIMARY CONNECTION: Pattern 5 (landing reliability as independent bottleneck) — mission design choice directly evidences the tradeoff.

WHY ARCHIVED: The equatorial near-side choice was unexpected and reveals Interlune's explicit recognition of landing reliability as an extraction design constraint. This is a real-world engineering decision that evidences the pattern, not just commentary about it.

EXTRACTION HINT: Extract the mission design tradeoff as explicit evidence that landing reliability shapes extraction site selection, not just technology readiness or resource concentration. The design choice itself is the evidence.


## Key Facts
- Interlune's Prospect Moon 2027 mission targets equatorial near-side, not south pole
- Griffin-1 mission (July 2026) carries multispectral camera to south pole for He-3 concentration mapping
- Interlune raised $5M SAFE in January 2026
- Interlune has $500M+ in total purchase orders and government contracts (Bluefors, DOE, Maybell, others)
- Interlune excavator current phase wraps mid-2026 with go/no-go decision on follow-on funding
- Full-scale excavator prototype built with Vermeer partnership
- Excavator design: continuous-motion technique, 100 tonnes/hour rated capacity per Harvester
- CLPS landing success rate: 20% (1 of 5 clean successes)
- Equatorial He-3 concentration range: ~1.4-2 ppb
