An Outline for future Mars Exploration With Slides

Is 2037 the cut-off date for humankind's landing on Mars? Has NASA developed a engine that will cut the journey time there by half? Did the Russians do something similar as far back as 1971? Get in this presentation a never before look at Mars exploration with a stress on what is to be done in the coming years- things we know,and things we don't know. A valuable input ,at low price,for any student or buff's library.