This is based on Australia's Commonwealth Heritage List. I think it kind of works?
Considering the Earth as part of the space environment, including also interplanetary space, celestial bodies of the Solar System and galactic space, then:
A place that is a component of the natural or cultural environment of space may be inscribed on the Space Heritage List if it is of international or other special significance or value to humanity for future generations as well as for the present community because of any of the following:
(a) its importance in the course, or pattern, of the natural or cultural history of outer space;
(b) it possesses uncommon, rare or endangered aspects of outer space natural or cultural history;
(c) it has potential to yield information that will contribute to an understanding of outer space's natural or cultural history;
(d) its importance in demonstrating the principal characteristics of:
(i) a class of outer space’s natural or cultural places; or
(ii) a class of outer space's natural or cultural environments;
(e) its importance in exhibiting particular aesthetic characteristics valued by a community or cultural group;
(f) its importance in demonstrating a high degree of creative or technical achievement at a particular period;
(g) its strong or special association with a particular community or cultural group for social, cultural or spiritual reasons;
(h) its special association with the life or works of a person, or group of persons, of importance in outer space's natural or cultural history.
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