An August 2020 study had suggested that lava tubes on the moon could reach 1 kilometer (3280.84 feet) in diameter. “We shouldn’t be too surprised if future exploration reveals even larger caves.

China’s space agency on Tuesday released images of the Earth and moon captured by its asteroid-sampling Tianwen-2 spacecraft, while confirming that the probe was in good condition after more ...

"The underground volcanic lava pipes by the Jingbo Lake are the most similar environment on Earth to the underground space of the moon. I hope our forward-looking research can serve China's lunar ...