What is celestia?

Could you please clarify what you mean by "celestia"? Is it a specific term related to cryptocurrency, finance, or perhaps another field entirely? If it's a project, platform, or tool in the world of cryptocurrency or finance, I'd be happy to provide a brief description based on my knowledge and research. However, without more context, it's difficult to give a precise answer. Is there any additional information you can share to help me better understand your question?