What technologies are bringing us closer to the dream of getting to Mars?

Getting to Mars is no longer just science fiction film material. With every passing year, scientists, engineers and space agencies are advancing in the development of technologies that could make the manned missions to the red planet a reality in the next decade. But, what are those technologies and how are they solving the great challenges involved in this feat? Let’s review the most promising tools, from the engines that could shorten the jour…