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Research shows oceans are vital for the possibility of alien life

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Posted in Science on 21st Jul, 2014 11:33 PM by AlexMuller

Researchers at the University of East Anglia have made an important step in the race to discover whether other planets could develop and sustain life. New research published today in the journal Astrobiology shows the vital role of oceans in moderating climate on Earth-like planets.

 
Until now, computer simulations of habitable climates on Earth-like planets have focused on their atmospheres. But the presence of oceans is vital for optimal climate stability and habitability. The research team from UEA's schools of Mathematics and Environmental Sciences created a computer simulated pattern of ocean circulation on a hypothetical ocean-covered Earth-like planet. They looked at how different planetary rotation rates would impact heat transport with the presence of oceans taken into account.
 
Prof David Stevens from UEA's school of Maths said: "The number of planets being discovered outside our solar system is rapidly increasing. This research will help answer whether or not these planets could sustain alien life. "We know that many planets are completely uninhabitable because they are either too close or too far from their sun. A planet's habitable zone is based on its distance from the sun and temperatures at which it is possible for the planet to have liquid water.
 
"But until now, most habitability models have neglected the impact of oceans on climate. "Oceans have an immense capacity to control climate. They are beneficial because they cause the surface temperature to respond very slowly to seasonal changes in solar heating. And they help ensure that temperature swings across a planet are kept to tolerable levels.

Tags: spaceplanetexoplanetoceanlifeuniversewater

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