天文科普讲座与你有约.PDF

11 11 6 00 212 Part one Part two Medicine for Mars China has recently joined that elite club of nations capable of undertaking autonomous human space flight operations. Later this century an astronaut, cosmonaut will make the first footprint on the surface of Mars. Spanning millions of interplanetary miles, stretched over months and years, this marathon extraterrestrial expedition will pose formidable challenges for astronauts and their support teams. On this voyage biological hazards will present one of the most formidable obstacles and will demand unique approaches to crew protection, healthcare and health maintenance. Astronautics must acknowledge its most versatile but weakest link: the astronaut crew. In the 21st Century engineering and science will play key roles in protecting crews from the biological hazards of the space environment and in developing healthcar