Frozen volatiles such as water ice are a great deal more reflective to S-band radio waves than lunar rocks. Radio waves also have different traits when reflected off ice than off silicate rock. An Evaluation in the indicators returned from orbit 234 confirmed reflection properties suggestive of water ice with https://ice-caps36791.blogdanica.com/27694835/the-smart-trick-of-ice-caps-moonrock-that-nobody-is-discussing