Reality mars https://validator.w3.org/feed/docs/rss2.html Mars facts Launching a craft from Mars What launch vehicles are available? What are the requirements for a Mars spacecraft? Growing food on Mars How will humans get to Mars? Interplanetary Travel Create New Topic Mars in the News How will humans live on Mars? How might humans return from Mars? The SpaceX method How many earth launches will it take to colonise Mars? Reply To: What are the requirements for a Mars spacecraft? Reality Mars Log Out Log In Register Lost Password Reset Password