ispace Uncrewed Lander

HAKUTO-R Mission 2

ispace's second lunar landing attempt with the RESILIENCE lander and TENACIOUS micro rover, targeting Mare Frigoris.

Status Completed
Launch Jan 15 2025
Attempt Jun 5 2025
Outcome Communication lost during descent
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Mission Overview

HAKUTO-R Mission 2, carrying the lander named RESILIENCE and a micro rover called TENACIOUS, was ispace's second attempt to achieve a commercial lunar landing. Launched on January 15, 2025 alongside Firefly's Blue Ghost Mission 1 on a SpaceX Falcon 9, the mission took a low-energy trajectory to the Moon, targeting a landing at Mare Frigoris (Sea of Cold).

ispace incorporated numerous improvements based on the Mission 1 failure, including updated altitude estimation software, additional sensor redundancy, and a redesigned descent profile. The company also developed a new micro rover called TENACIOUS — a small tracked vehicle designed to traverse short distances and demonstrate surface mobility.

Unfortunately, history partially repeated. During the final descent on June 5, 2025, ispace lost communication with the RESILIENCE lander. Post-event analysis indicated a laser rangefinder malfunction prevented proper deceleration during the powered descent phase, resulting in a hard landing. This marked ispace's second consecutive landing failure, though the company maintained that critical data was gathered during the approach and descent phases.

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Technical Overview

Lander Type Series 2 Upgraded from Mission 1
Lander Mass ~350 kg Dry mass (estimated)
Transit Duration ~5 months Low-energy transfer
Target Site Mare Frigoris 56.5°N latitude
Micro Rover TENACIOUS Tracked design
Launch Rideshare With Blue Ghost Mission 1
Improvements Updated altitude software Added sensors
Failure Cause Laser rangefinder Malfunction during descent
03

Mission Objectives

01

Achieve First Commercial Landing

Demonstrate a successful soft landing after the Mission 1 failure, validating ispace's corrective measures and updated descent system.

02

Deploy TENACIOUS Rover

Deliver and operate the small tracked micro rover on the lunar surface, demonstrating commercial rover mobility.

03

Improved Navigation

Validate the updated altitude estimation and sensor systems redesigned after the Mission 1 terrain-confusion failure.

04

Mare Frigoris Exploration

Land in the Sea of Cold, a large mare on the Moon's nearside, characterizing the surface for future commercial missions.

04

Outcome

Mission Failed — Communication Lost During Final Descent

RESILIENCE lost contact during its powered descent to Mare Frigoris on June 5, 2025. Post-event analysis indicated the laser rangefinder malfunctioned during the critical final descent phase, preventing the lander from decelerating properly. The spacecraft likely impacted the surface at high velocity.

This marked ispace's second consecutive lunar landing failure — though with a different root cause than Mission 1's altitude sensor terrain confusion. Despite the setback, ispace gathered engineering data from the successful cruise, lunar orbit, and early descent phases and announced it would continue with plans for future missions. The TENACIOUS micro rover was lost along with all other payloads.

Failure Point Final powered descent
Cause Laser rangefinder malfunction
Consecutive Failures 2 (M1 + M2)
Data Recovered Cruise and orbit phases
05

Spacecraft

Spacecraft diagram coming soon
01 RESILIENCE Lander (Series 2) Updated version of the Series 1 lander with improved avionics, additional sensor redundancy, and modified descent profile based on Mission 1 failure analysis.
02 Updated Navigation System Redesigned altitude estimation software and additional laser rangefinder to address Mission 1's terrain-confusion failure. The rangefinder itself malfunctioned on this mission.
03 TENACIOUS Micro Rover Small tracked rover developed by ispace for surface mobility demonstration. Designed for short-distance traverse and surface imaging. Lost in the crash.
04 Propulsion & Attitude Control Bipropellant main engine and attitude control thrusters for the powered descent phase. Descent profile updated from Mission 1.
06

Mission Updates

ispace RESILIENCE Lander Crashes During Landing Attempt

ispace's HAKUTO-R Mission 2 RESILIENCE lander lost communication during final descent to Mare Frigoris. A laser rangefinder malfunction prevented proper deceleration, resulting in a hard landing. Second consecutive lunar landing failure for the Japanese company.

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