Since Neil Armstrong took his giant step for mankind onto the Moon almost 60 years ago, small samples from the lunar surface have been brought back to Earth.The samples provide a glimpse into what minerals are in the lunar regolith and missions such as Artemis II provide greater understanding of the Moon's environment.As technology advances amid the race to send people to Mars, scientists and corporations are exploring how the Moon can be mined.Here is a breakdown of some of the physical, environmental, legal and ethical challenges involved in Moon mining, according to a scientist, an engineer, a lawyer and…