Musk unveils Mars city plan, aims to land 2 flights by 2024
Space exploration startup SpaceX Founder Elon Musk on Friday unveiled a detailed plan to build a human colony on Mars and said the startup plans to land two cargo ships on the planet by 2022. The startup will confirm sources of water and potential hazards by that time. SpaceX is aiming to take two crewed flights to Mars by 2024.