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Oceans Make Exoplanets Stable for Alien Life, new study shows
Oceans Make Exoplanets Stable for Alien Life, new study shows

Oceans Make Exoplanets Stable for Alien Life, new study shows

There’s one thing we definitely have in common with aliens, if they exist, and that’s a need to be near the sea.

By creating a computer simulated pattern of ocean movement on a model of a planet much like Earth, scientists at the University of East Anglia were able to study how the presence or absence of an ocean affected heat rotation.

Published in Astrobiology, the study concludes that for a planet to sustain a stable temperature, and therefore life, an ocean has to be present.

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.

“We found that heat transported by oceans would have a major impact on the temperature distribution across a planet, and would potentially allow a greater area of a planet to be habitable.

“Mars for example is in the sun’s habitable zone, but it has no oceans – causing air temperatures to swing over a range of 100OC. Oceans help to make a planet’s climate more stable so factoring them into climate models is vital for knowing whether the planet could develop and sustain life.

“This new model will help us to understand what the climates of other planets might be like with more accurate detail than ever before.”


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