Japan's moon lander has been put back to sleep after it surprisingly survived the freezing, two-week lunar night, the country's space agency said, with another operation attempt scheduled for later this month.

The unmanned Smart Lander for Investigating moon (SLIM) touched down in January at a wonky angle that left its solar panels facing the wrong way.

As the sun's angle shifted, it came back to life for two days and carried out scientific observations of a crater with a high-spec camera.