The Japanese craft – equipped with a shape-shifting mini-rover co-developed by the firm behind Transformer toys – has been designed to pull off the feat with unprecedented precision.
02:35
Japan launches rocket carrying moon lander to explore origins of the universe
Japan launches rocket carrying moon lander to explore origins of the universe
The lander began its “powered descent sequence” at around midnight Japanese time and after scanning the surface and hovering, appeared to have landed, JAXA’s live visualisation showed.
“From the screen it appears the SLIM has landed on the moon. We are checking the status,” JAXA official Shin Toriumi said before the live broadcast cut, pending a later news conference.
If all went to plan, it will have landed within a target area just 100 metres (yards) across, far tighter than the usual landing zone of several kilometres (miles).
Success would restore hi-tech Japan’s reputation in space after two failed lunar missions and recent rocket failures, including explosions after take-off.
India rover completes moon walk as scientists look for signs of frozen water
India rover completes moon walk as scientists look for signs of frozen water
It would also echo the triumph of India’s low-cost space programme in August, when it became the first to land an uncrewed craft near the moon’s largely unexplored south pole.
Japan’s landing would be “a very big deal”, Emily Brunsden, senior lecturer in astrophysics and director of the University of York’s Astrocampus, said before the descent.
“The ‘sniper’ landing precision is a huge leap in technology that will allow missions to be designed to target much more specific research questions,” she said.
“Usually there is only one chance to do it right, so the smallest of errors can cause a mission to fail,” she said.
Japan’s space agency JAXA has already made a pinpoint landing on an asteroid, but the challenge is greater on the moon, where gravity is stronger.
SLIM will try to reach a crater where the moon’s mantle – the usually deep inner layer beneath its crust – is believed to be accessible at the surface.
“The rocks exposed here are crucial in the search for the origins of the moon and the Earth,” said Tomokatsu Morota, associate professor at the University of Tokyo specialising in lunar and planetary exploration.
This includes shedding light on the mystery of the moon’s possible water resources, which will also be key to building bases there one day as possible stopovers on the way to Mars.
“The possibility of lunar commercialisation depends on whether there is water at the poles,” Morota said.
US-China space race fuelled by lunar landings and orbital ‘parking spots’
US-China space race fuelled by lunar landings and orbital ‘parking spots’
More than 50 years after the first human moon landing, many countries and private companies are attempting to make the trip anew. But crash-landings, communication failures and other technical problems are rife.
This month, US private firm Astrobotic’s Peregrine lunar lander began leaking fuel after take-off, dooming its mission.
On Thursday, contact with the spaceship was lost over a remote area of the South Pacific after likely burning up in the Earth’s atmosphere on its return.
Nasa has also postponed plans for crewed lunar missions under its Artemis programme.
03:10
India makes historic landing on the lunar south pole, becoming the 4th country to land on the moon
India makes historic landing on the lunar south pole, becoming the 4th country to land on the moon
Russia, China and other countries from South Korea to the United Arab Emirates are also trying their luck.
Previous Japanese lunar missions have failed twice – one public and one private.
In 2022, the country unsuccessfully sent a lunar probe named Omotenashi as part of the United States’ Artemis 1 mission.
In April, Japanese start-up ispace tried in vain to become the first private company to land on the moon, losing communication with its craft after what it described as a “hard landing”.
Moon landing attempt by US firm appears doomed after ‘critical’ fuel leak
Moon landing attempt by US firm appears doomed after ‘critical’ fuel leak
SLIM’s spherical metal probe, slightly bigger than a tennis ball and weighing the same as a large potato, is meant to pop open like a Transformer toy.
Equipped with two cameras, the two halves of the SORA-Q sphere are designed to slot out and propel the gadget around either in “butterfly” or “crawl” mode, JAXA says.
Back on Earth, a toy version costs 21,190 yen (US$140) and according to its promotional video can roll around a living room taking pictures – for example of a buyer’s cat.