What happens when bacteria go into space? They can become more lethal and antibiotic resistant

More and more aircrafts and probes are going into space with the enthusiasm of exploration, and some planets have traces of human beings and earth creatures. In recent years, more studies from space missions have shown that bacteria become more lethal and resilient when exposed to microgravity. < / P > < p > for many countries and their people, space is becoming the “Ultimate Frontier.”. However, although we have the ability to enter space more intelligently and faster, there are still many unknown mysteries about its impact on biological materials, including human beings. < / P > < p > although the possibilities of space exploration seem infinite, so are the dangers. One particular danger comes from bacteria, the smallest form of life on earth. Antibiotic resistant bacteria are the most dangerous bacteria on earth, such as Escherichia coli and Staphylococcus aureus. < / P > < p > bacteria live in and around us. These microbes all follow us, and may also follow astronauts and spacecraft into space. Just as the unique environment of space affects us, so does the bacteria. < / P > < p > all life on earth evolved under the action of gravity. As a result, life on earth has not yet adapted to living in space. When gravity is removed or greatly reduced, a completely new and completely different state may be revealed. < / P > < p > in space, gravity is minimized, while sedimentation, convection and buoyancy are minimized. At the same time, forces such as liquid surface tension and capillary force become stronger. < / P > < p > at present, it is not clear how this change affects life forms. But the worry is that when exposed to microgravity, bacteria are likely to become more lethal and more resistant to antibiotics. They also stay in this way for a short time when they return to earth, compared to bacteria that have never left the earth. < / P > < p > in addition, bacteria seem to mutate faster in space. However, the main purpose of these mutations is to adapt the bacteria to the new environment, rather than become super lethal. In any case, studies have shown that microgravity in space promotes the formation of bacterial biofilms. Biofilms are dense cell colonies that produce a matrix of polymeric substances that allow bacteria to adhere to each other or to a fixed surface. < / P > < p > biofilms increase bacterial resistance to antibiotics, promote their survival, and improve their ability to cause infections. We have seen biofilms grow and attach to space station equipment, leading to their biodegradation. For example, biofilm has affected the space station’s navigation windows, air conditioning, electrolytic oxygen blocks, water circulation devices and thermal control systems. Long term exposure to the biofilm may cause biodegradation and failure of the equipment, resulting in devastating effects. Another effect of microgravity on bacteria is their structural distortion. When some bacteria grow under microgravity, the cell volume decreases and the number of cells increases. Interestingly, the smaller the bacterial cell surface area, the less molecular cell interaction, which reduces the effect of antibiotics on bacteria. In addition, gravity has no effect on sedimentation and buoyancy, which may change the way bacteria absorb nutrients or attack their drugs. This may lead to increased bacterial resistance and infectivity in space. Today, scientists have even developed antibacterial liquid metals to inhibit antibiotic resistant bacteria. < / P > < p > all of these have serious effects, especially when encountering long-distance space flight with zero gravity. In this case, bacterial infections that cannot be suppressed and treated will be catastrophic and devastating. < / P > < p > in a study of bacteria on the international space station before 2016, Dr. David Cole from Davis University described the perfect environment for bacteria to grow. “The warm, humid, oxygen rich environment of the ISS is far from the vacuum of space,” he said However, on the other hand, the impact of space also creates a unique environment that is beneficial to life on earth. For example, in the microgravity of space, molecular crystals become larger and more symmetrical than on earth. With more uniform crystals, more effective drugs and treatments can be developed to fight various diseases, including cancer and Parkinson’s disease. Therefore, the structures of these molecules can be determined by space research. It will also help to develop higher quality drugs. Due to the optimum crystal formation conditions, fiber optic cables can also be made into better standard finished products in space. This greatly improves the data transmission capacity, making the network and Telecommunications faster. Continue ReadingVideo Number assistant internal test online! Four functions let you send 1g video on the computer