New Delhi:When NASA and private companies are preparing to establish human settlements outside the Earth, a new research by scientists has increased the concern. According to this research, alien life may depend on such energy sources which are fatal for humans. Scientists say that alien creatures do not need Earth-like conditions to survive. They can also live in cool and dark places. But the kind of energy they use can be dangerous to human life.
According to researchers, alien life may depend on energy from galactic cosmic rays. These rays spread very fast in space and can reach the surface of planets and moons. When these rays hit ice or water, radiation is released. This starts chemical reactions. This process is called radiolysis. During radiolysis, elements are formed which can serve as fuel for living organisms.
Scientists say that the radiation emanating from radiolysis is extremely harmful for humans. This radiation can damage human cells. Prolonged exposure to it can cause serious diseases. In some cases it can also be fatal. The research clearly states that it would not be safe for humans to live in places where this kind of life is possible.
This research challenges old scientific ideas. Till now it was believed that sunlight, heat and oxygen are necessary for life. But scientists say that life is possible even in dark and cold places. Cosmic rays can work as energy there. This means that life can flourish beneath the surface of planets or moons. There will be neither sunlight nor human-like conditions.
Researchers paid special attention to Mars and the moons of Jupiter and Saturn. Europa and Enceladus are prominent among them. Both these moons are covered with ice. It is believed that water is present beneath them. Scientists observed the process of formation of electrons here. Electrons play an important role in energy production. This indicates that radiation-based life may be possible in these places.
The research also mentions extremophiles found on Earth. These are such creatures that survive even in extremely difficult conditions. Some extremophiles consume fuel that can kill humans. For example, a bacterium called Candidatus Desulfuraudis audaxviator harvests energy from the radioactive decay of uranium. This proves that life can adapt itself even in extremely dangerous situations.
Scientists say that if humans encounter such alien life in the future, it will not be safe. In places where such creatures live, human life can be in danger. This research is a warning for future space travel and colony plans. Scientists believe that along with the search for alien life, human safety will also have to be kept on top. This study shows that as exciting as the search for life in space is, it can also be dangerous.
