As an expert in space law and international relations, I can tell you that the concept of ownership for celestial bodies like Mars is a complex and evolving subject. It is governed by the Outer Space Treaty of 1967, which was signed by many countries around the world. According to this treaty, no nation can claim sovereignty over any celestial body, including Mars.

However, the treaty does not specifically address private ownership or the rights of private entities to exploit resources on these bodies. As space exploration advances and private companies become more involved, there are ongoing discussions and legal debates about how to manage these issues.

Here's the English response with the key term in red:

"No one *owns* Mars. The Outer Space Treaty of 1967, which is a cornerstone of international space law, explicitly states that celestial bodies, including Mars, cannot be subject to national appropriation by claim of sovereignty."

And here is the translation in Chinese, separated by "read more >>

Headquartered in McLean, unincorporated Fairfax County, Virginia, United States, the company is entirely owned by the Mars family. Mars operates in six business segments around the world: Wm. Wrigley Jr.read more >>