Japan has become only the fifth country in the history of the world to land on the Moon, but it wasn’t all good news, as the lander might have run out of power.

The Japan Aerospace Exploration Agency (JAXA) announced that its Smart Lander for Investigating Moon (SLIM) successfully touched down on the moon’s surface on January 20. The space agency was able to establish communication with the craft when it landed. However, JAXA said the solar cells on the craft are “not generating power.”

In another statement, JAXA said the SLIM’s battery only had 12% remaining when it touched down. It was disconnected to avoid being unable to restart as the space agency hopes for favorable sunlight conditions to power it up. SLIM’s solar cells are facing west, which gives the craft a chance of catching some rays.

“Until power was switched off after landing, the technical and image data acquired during the landing descent and on the lunar surface were successfully transmitted,” JAXA …