Soil and rocks returned from the moon’s far side suggest it may be drier than the side constantly facing Earth. Chinese scientists reported the findings Wednesday, but cautioned more samples are needed for a clearer picture. China became the first country to return samples from the moon’s far side last year. The Chang’e 6 spacecraft scooped up the volcanic rock and dirt from an ancient impact basin. Researchers used electron microscopes to analyze the samples and found the abundance of water to be on the dry end of what’s been found in samples from the moon’s near side.