Last month Japanese startup ispace tried to become the first private company to land a spacecraft on the moon — but in the crucial final moments lost contact with its vehicle. Now the Associated Press reports that company officials are revealing what happened: while trying to land, their vehicle went into free-fall. Company officials blame a software issue, plus a decision in December to change the touchdown location to a crater. The crater's steep sides apparently confused the onboard software, and the 7-foot (2-meter) spacecraft went into a free-fall from less than 3 miles (5 kilometers) up, slamming into the lunar surface. The estimated speed at impact was more than 300 feet (100 meters) per second, said the company's chief technology officer, Ryo Ujiie. NASA's Lunar Reconnaissance Orbiter photographed the crash site the next day as it flew overhead, revealing a field of debris as well as lunar soil hurled aside by the impact. Computer simulations done in advance of the landing attempt did not incorporate the terrain of the new landing site, Ujiie said. CEO and founder Takeshi Hakamada said the company is still on track to attempt another moon landing in 2024, and that all the lessons learned will be incorporated into the next try. A third landing attempt is planned for 2025.

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