Can you buy bits of Mars?

Could you please elaborate on the possibility of purchasing fractions of Mars? Is it something that's feasible in the realm of cryptocurrency or finance? Are there any existing platforms or initiatives that allow individuals to invest in or own a portion of the Red Planet, and if so, how does this work? Are there any legal or ethical considerations that need to be taken into account before engaging in such a venture? Additionally, what are the potential risks and rewards associated with investing in Mars or its resources?