: While reputable private registries promise not to sell the same star twice within their system, another company could easily sell the "naming rights" for that same star to someone else.
You officially buy or name a star through NASA . NASA is a government space agency focused on research and exploration, not commercial star registries.
The only internationally recognized authority for naming celestial bodies is the , and they never sell star names. Official star names are established through historical usage or specific scientific guidelines, and since 2022, the IAU has strictly prohibited naming stars after individuals.
If you are looking to "buy a star" as a symbolic gift, you can use private commercial services. Here is how that process works and what to expect. How Symbolic Star Naming Works