international law27 specified in art 38(1) of the Statute of the International Court
of Justice (‘ICJ Statute’). In the context of regulating the use and exploration of
outer space, these five sets of principles have largely been considered as
constituting ‘soft law’, although a number of specific provisions may now
represent customary international law. However, as with the space treaties,
they are generally of little direct import with respect to space tourism activities.