Private Japanese spacecraft crashes into moon in 'hard landing,' ispace says
A spacecraft from Japan attempting to make the country's first private moon landing on Thursday instead crashed into the lunar surface in a disappointing second failure for its ispace builders.
The Japanese company's Resilience spacecraft aimed to make a soft touchdown in the Mare Frigoris ("Sea of Cold") region of the moon's near side today (June 5) at 3:17 p.m. EDT (1917 GMT; 4:17 a.m. on June 6 Japan Standard Time). But telemetry from the lander stopped one minute and 45 seconds before the scheduled touchdown, apparently due to an equipment malfunction.
It was reminiscent of ispace's first lunar landing attempt, in April 2023. The spacecraft also went dark during that try, which was eventually declared a failure.
"We wanted to make Mission 2 a success but unfortunately we were able to land," ispace founder and CEO Takeshi Hakamada told reporters in a press conference a few hours after the landing try.
Preliminary data based on telemetry from Resilience's final moments suggest that the lander's laser rangefinder experienced some sort of delays while measuring the probe's distance to the lunar surface.
"As a result, the lander was unable to decelerate sufficiently to reach the required speed for the planned lunar landing," ispace officials wrote in an update. "Based on these circumstances, it is currently assumed that the lander likely performed a hard landing on the lunar surface."
A hard landing means Resilience hit the moon's surface faster than planned. It's unlikely it survived in any condition to proceed with its two-week mission, or deploy the small Tenacious rover built by the European Space Agency.
"For those who have supported us, we'd really like to apologize," Hakamada said, adding that ispace is committed to learning from its failures for future flights. "We have to continue on our mission to have moon exploration by [the] Japanese."
Resilience stood 7.5 feet (2.3 meters) tall and weighs about 2,200 pounds (1,000 kilograms) when fully fueled. It's the second of ispace's Hakuto-R lunar landers, which explains the name of its current flight: Hakuto-R Mission 2.
Hakuto is a white rabbit in Japanese mythology. The ispace folks first used the name for their entry in the Google Lunar X Prize, which offered $20 million to the first private team to soft-land a probe on the moon and have it accomplish some basic exploration tasks. The Prize ended in 2018 without a winner, but ispace carried on with its lunar hardware and ambitions. (The "R" in Hakuto-R stands for "reboot.")
The company made big strides on Hakuto-R Mission 1, which successfully reached lunar orbit in March 2023. But that spacecraft couldn't stick the landing; it crashed after its altitude sensor got confused by the rim of a lunar crater, which it mistook for the surrounding lunar surface.
ispace folded the lessons learned into Hakuto-R Mission 2, which launched on Jan. 15 atop a SpaceX Falcon 9 rocket from Florida's Space Coast.
That was a moon-mission twofer for SpaceX: Resilience shared the rocket with Blue Ghost, a robotic lander built and operated by the Texas company Firefly Aerospace that carried 10 scientific instruments for NASA via the agency's Commercial Lunar Payload Services (CLPS) program.
Blue Ghost arrived in orbit around the moon on Feb. 13 and landed successfully on March 2, pulling off the second-ever soft lunar touchdown by a private spacecraft. That mission went well from start to finish; the solar-powered Blue Ghost operated on the moon for two weeks as planned, finally going dark on March 16 after the sun set over its landing site.
Resilience took a longer, more energy-efficient path to the moon, which featured a close flyby of Earth's nearest neighbor on Feb. 14. The lander arrived in lunar orbit as planned on May 6, then performed a series of maneuvers to shift into a circular path just 62 miles (100 kilometers) above the surface.
That set the stage for Thursday's action. Resilience used a series of thruster burns to descend, decelerate and steer its way toward a landing in Mare Frigoris, a vast basaltic plain that lies about 56 degrees north of the lunar equator. But something went wrong when Resilience was just 192 meters above the lunar surface.
It's not clear if Resilience was moving faster than expected because of the laser rangefinder data lag, or if that data lag was caused by the probe moving faster than planned, ispace said.
"First, we have to figure out the root cause for the phenomenon we observed, and then we have to utilize them into Mission 3 and Mission 4," Hakamada said.
If Resilience had succeeded today, it would be just the second soft lunar touchdown for Japan; its national space agency, JAXA, put the SLIM ("Smart Lander for Investigating Moon') spacecraft down safely in January 2024.
Today's landing attempt was part of a wave of private lunar exploration, which kicked off with Israel's Beresheet lander mission in 2019. Beresheet failed during its touchdown try, just as ispace's first mission did two years ago.
Pittsburgh-based Astrobotic had an abortive go in January 2024 with its Peregrine lunar lander, which suffered a crippling fuel leak shortly after launch and ended up crashing back to Earth. A month later, Houston company Intuitive Machines made history with its Odysseus craft, which touched down near the lunar south pole.
Odysseus tipped over shortly after touchdown but continued operating for about a week. Its successor, named Athena, also toppled during its lunar touchdown on March 6 — just four days after Blue Ghost hit the gray dirt — with more serious consequences: The probe went dark within a few short hours.
Peregrine, Blue Ghost, Odysseus and Athena all carried NASA science payloads. They were supported by the agency's CLPS program, which aims to gather cost-efficient science data ahead of crewed Artemis moon landings, the first of which is slated for 2027.
Resilience carried five payloads, but they don't belong to NASA; Hakuto-R Mission 2 is not a CLPS effort. Three of these five are pieces of science gear that aim to help human exploration of the moon: a deep-space radiation probe developed by National Central University in Taiwan; a technology demonstration from the Japanese company Takasago Thermal Engineering Co. designed to produce hydrogen and oxygen from moon water; and an algae-growing experiment provided by Malaysia-based Euglena Co. (Algae could be an efficient food source for lunar settlers someday.)
The other two payloads are a commemorative plate based on the "Charter of the Universal Century" from the Japanese sci-fi franchise Gundam and a tiny rover named Tenacious, which was built by ispace's Luxembourg-based subsidiary.
Tenacious was designed to roll down onto the surface and collect a small amount of moon dirt, under a contract that ispace signed with NASA back in 2020.
The rover carried a payload of its own — "Moonhouse," a tiny replica of a red-and-white Swedish house designed by artist Mikael Gensberg. The rover was supposed to lower the Moonhouse off its front bumper onto the lunar dirt, establishing a colorful artistic homestead in the stark gray landscape.
None of that will come to pass, however, now that ispace has confirmed Resilience slammed into the lunar surfance instead of making a delicate four-point "soft landing."
Related stories:
— What's flying to the moon on ispace's Resilience lunar lander?
— Japan's Resilience moon lander aces lunar flyby ahead of historic touchdown try (photo)
— Japan's Resilience moon lander arrives in lunar orbit ahead of June 5 touchdown
Despite the failed Resilience landing, ispace has big lunar goals. The company plans to launch two moon missions in 2027, Mission 3 and Mission 4, that will use a larger, more capable lander named Apex 1.0. That lander will weigh 2 tons, much larger than Resilience.
"We know it's not going to be easy," ispace director and CFO Jumpei Nozaki said during the press conference. "But it's hard. It has some meaning and significance of trying."
Nozaki said he and ispace felt extremely sorry to have disappointed the company's 80,000 supporters and stockholders, and were determined to learn from the experimence in the designs fo Mission 3 and Mission 4.
Hakamada, when asked by a reporter if he or the team had cried after the failed landing, said it wasn't a time for crying.
"Right now, we don't know the cause, so I can't get emotional and cry," he said. "I don't think that's a good idea. The most important thing is to find out the cause for this second failure."
Editor's note: This story, originally posted at 5 p.m. ET, was updated at 9:30 p.m ET with new details from ispace's post landing attempt press conference. Space.com Editor-in-Chief Tariq Malik contributed to this report.
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