Paris, July 7 (): Researchers predicted that the microbes will be the last survivors of the future earth in next one billion years.
Jack O’Malley-James of the University of St. Andrews, Edinburgh said that there would not be much oxygen present in the atmosphere and so they need to be able to survive in low or zero-oxygen environments, high pressures and high salinities because of evaporating oceans.
Within the next billion years, an increased evaporation and chemical reactions of rainwater will cause a huge fall of carbon dioxide in the atmosphere on which plants depend for photosynthesis, resulting in the disappearance of plants and animals in the earth. Due to the disappearance of the plants, our planet will be depleted of oxygen and the Sun will become so intense and become steadily more luminous. As the intensity of heat increases in the Earth, oceans will dry up completely.
The only surviving creature in the earth will be tiny organisms called extremophiles. This results in microbial life coping with intense ultra-violet radiation and raging heat from the Sun to inherit the planet.
Jack O’Malley-James said, “The far-future Earth will be very hostile to life by this point. All living things require liquid water, so any remaining life will be restricted to pockets of liquid water, perhaps at cooler, higher altitudes or in caves or underground.”
The scientists believe that these tiny organisms would probably be grouped around the last drops of water deep underground. These too will vanish in about 2.8 billion years as condition worsens and our planet will be devoid of all life beings.
O’Malley James has created a computer model to simulate these extremely long-range temperature forecasts and has used the results to predict the time-line of future extinctions.
In a five-day Britain’s Royal Astronomical Society (RAS) annual meeting at St. Andrews, around 600 astronomers and space scientists gathered.