water on the moon

Asteroids most likely delivered water to the moon – here’s how we cracked it

Asteroids most likely delivered water to the moon – here’s how we cracked it

One of the moon’s greatest mysteries has long been whether it has any water. During the Apollo era in 1960s and 70s, scientists were convinced it was dry and dusty – estimating there was less than one part in a billion water. However, over the last decade, analyses of lunar samples have revealed that there is a considerable amount of water inside the moon – up to several hundred parts per million – and that it’s been there since the satellite was very young.