"The International Astronomical Union (IAU) officially recognizes five objects as dwarf planets: Ceres in the main asteroid belt between Mars and Jupiter, and Pluto, Eris, Haumea, and Makemake in the trans-Neptunian region beyond the orbit of Neptune. However, the definition used by the IAU applies to many other trans-Neptunian objects (TNOs) and can be summarized as follows: Any non-satellite large enough to be rounded by its own gravity. ..." – By Bryan J. Holler
"Space law is composed of disparate elements of ordinary national laws and general international law. It has been created by the agreement of states as to the international law that should govern important technical and technological developments of the later 20th and the 21st century. That agreement is expressed in five general treaties; other treaty-level measures including as to the use of radio, declarations of principle, recommendations on the conduct of space activities, and by state practice. ..." – By Francis Lyall
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