text: "Producing renewable energy on Mars is technologically challenging", the team announced the idea on the arXiv database?
classes:  No, despite many obstacles in the process of implementation, if successful, the production of renewable energy will become a big step forward for the world science and technology.  Besides, despite many obstacles in the process of implementation, if successful, the production of renewable energy will become a big step forward for the world science and technology.  Yes, despite many obstacles in the process of implementation, if successful, the production of renewable energy will become a big step forward for the world science and technology.  Meanwhile, despite many obstacles in the process of implementation, if successful, the production of renewable energy will become a big step forward for the world science and technology.