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Japan's Moon Lander on it's nose after landing

  • Joel Orme
  • Jan 25, 2024
  • 2 min read

Japan's Moon lander ended up on its nose when it made its historic touchdown on the lunar surface. The first picture of the stricken Slim spacecraft shows it rotated 90 degrees from how it should have come to rest.


This will go some way to explaining the difficulties it has had in generating the electricity needed to operate. The hope is to wake Slim when lighting angles change at its landing location.


The image was captured by the small baseball-sized robot called Sora-Q that was ejected from Slim moments before touchdown last Saturday. "An abnormality in the main engine affected the landing attitude of the spacecraft," the Japanese space agency Jaxa said in a statement.


It seems one of the two big thrusters on Slim (Smart Lander for Investigating Moon) stopped working during the descent.


Before hibernation, controllers were able to pull down a series of pictures of the surface taken by its on-board infrared camera. These show the spacecraft to be on a slope, surrounded by small rocks. Slim's landing location is at the edge of an equatorial crater known as Shioli.


Engineers had wanted to get within 100m (330ft) of their targeted location. This was achieved.


"Analysis of the data acquired before shutting down the power confirmed that Slim had reached the Moon's surface approximately 55m east of the original target landing site," said Jaxa, adding that the onboard computer had also taken a decision in the final moments of descent to move the craft to one side to avoid obstacles.


This will delight officials, as will the success of the two rovers. Not only did Sora-Q move on the lunar surface and take its picture, but Lev-1 also managed to hop. Like Slim, Lev-1 has also powered down.


"The accomplishment of Lev-1's leaping movements on the lunar surface, inter-robot communication between Lev-1 and Sora-Q, and fully autonomous operations represent ground-breaking achievement. It would be regarded as a valuable technology demonstration for future lunar explorations, and the acquired knowledge and experience will be applied in upcoming missions," the agency said.

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