[Utah-astronomy] Dirt vs soil (Was: Apollo 11 flag apparently not standing)

On 08 Sep 2009, at 15:51, Bob Moore wrote:

Great point ... do plants other than earth have surfaces we refer to as "ground"

This has come up in a few of the NASA training telecons I've participated it. "Ground" seems to be ok but "soil" and "dirt" are not. "Regolith" is the officially preferred term. patrick