Hello how may I help you? Hi. I have some ask Hello, what information can I provide you? Could you tell me what is the longest thing on world That is a bit vague. Can you be more specific? Longest thing on earth. That have ever existed. Still too vague. What do you mean by "thing?" Anything taht matters. A matter;.l A matter. I'm not sure I can help with this query. Why? I need a specific query.