The exploration and use of the space environment, consisting of outer space per se, the moon, and celestial bodies, may result in harm to persons and to property. International law and municipal law have focused on rules allowing for the payment of money damages for harm caused by space objects and their component parts, including the “payload.” Both forms of law have accepted the basic proposition that money damages should compensate for harm. Principal attention will be given in this analysis to the kinds of harm caused by space objects that are considered to be compensable under international law at the present time.