A Japanese robot has successfully touched down on the Moon but problems with its solar power system mean the mission may live for just a few hours.
The Smart Lander for Investigating Moon or Slim put itself gently on the lunar surface near an equatorial crater.
The feat made the Asian nation only the fifth country to soft-land on Earth's natural satellite, after the US, the Soviet Union, China and India.
Engineers are now battling to save the mission.
For reasons not yet fully understood, the craft's solar cells will not generate electricity.
This leaves Slim totally reliant on its batteries and these will eventually discharge.
When they do, the craft will go silent. It won't receive commands and it won't be able to talk to Earth.
Engineers are currently prioritising activities.
They have turned off heaters and are pulling down pictures from the craft.
They are also retrieving data that will tell them how well the landing software worked.
Japanese space agency (Jaxa) officials will not immediately give up on Slim if it does fall silent.
It's always possible the solar cells have somehow become oriented in a way that prevents them from seeing the Sun.
Officials say as light angles change on the Moon, it was possible Slim could come back to life, the officials said.
Source: BBC
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