SpaceX founder Ilon Musk announced the company's plans to send 5 unmanned Starship spacecraft to Mars. According to him, this could happen in the next 2 years. Musk added that if the unmanned launches fail, the timing of manned flights could be postponed for a couple of years. He specified that trips to Mars are possible only every 2 years, when the planets are in the optimal position. In his message, the head of SpaceX noted that the successful landing of all vehicles could open the way to manned missions within 4 years.