Can you buy and name a planet?

Can you really buy and name a planet? It sounds like something straight out of a science fiction movie, but is it actually possible? I've heard rumors that some companies offer this service, but are they legitimate? And if it is possible, what kind of process is involved? Do you need to go through some sort of international space agency or is it a more straightforward transaction? I'm curious to know if there are any regulations or laws surrounding the ownership and naming of planets, and if so, who enforces them? I'd love to hear your insights on this topic.