。 According to a new paper published in the journal Biology, Alberto Fran of the center for Astrobiology in Madrid, Spain, and his colleagues < / P > < p > this tool is called “cmold” – a complex molecular detector. With this tool, they solved a major scientific challenge in the field of interstellar exploration: how to use robotic landers alone to detect life on other planets. Before < / P > < p > life detection instruments almost used gas chromatography-mass spectrometry (GC-MS) to find volatile organic compounds. These devices were used in the Viking lander in the 1970s, the curiosity Mars probe, and the European ExoMars Mars Mars exploration program, which will be launched soon. These devices heat the sample, separate out the elements in the sample, and then identify the elements by spectral signals. < / P > < p > but cmold works a little differently. It extracts organic molecules from suspensions and then applies three powerful analytical techniques: (1) microscopes, which look for microscopic visual evidence of life; (2) Raman spectrometers, which detect atomic composition and organic molecules; and (3) biomarker detectors, which contain antibodies and short DNA and RNA molecules that bind to life-related compounds. The emergence of this new technology is very timely. It can make robot missions to space explore life more competitive than sample retrieval projects. NASA, for example, has just launched the will probe to Mars to launch the sample retrieval program. Some parts of the cmold have been extensively tested and planned to fly into space on future missions. For example, the European Space Agency’s roslind Franklin probe, which is scheduled to launch in 2022, has a Raman spectrometer in its scientific payload. The icebreaker, NASA’s proposed Mars mission a few years ago, also has a biomarker probe. Taking into account these past experiences and many tests that have been completed, flange and his colleagues believe that the three-part cmold can be put into use in the near future. The authors of the paper say their new instruments are suitable for detecting life that we do not yet know. Of course, it also depends on how bizarre the so-called “unknown life” is. Although it is still worth exploring whether biomarker detectors will give positive signals on biochemistry different from the earth, Raman spectroscopy can detect complex organic biological characteristics, even if they do not correspond to known life molecules. Finally, high resolution optical microscopy is also an important tool for close observation of samples. < / P > < p > therefore, cmold represents a very promising method for detecting life on Mars and frozen satellites such as Europe and Enceladus. If there is life on Mars and the frozen moons of the outer solar system, they should at least have some similarities with the organisms on our earth (Titan is an exception, of course, and the biochemical types on Titan may be completely different from those on earth). But as we continue to launch more interstellar exploration missions, it’s obviously a good thing to have cmold ready. Didi Qingju bicycle has entered 150 cities