A new framework for understanding habitable environments in our solar system points to seven potential habitable candidates. - Universe Today by AndyTomaswick
If humanity is ever going to find life on another planet in the solar system, it’s probably best to know where to look. Plenty of scientists have spent many, many hours pondering precisely that question, and plenty have come up with justifications for backing a particular place in the solar system as the most likely to hold the potential for harboring life as we know it. Thanks to a team led by Dimitra Atri of NYU Abu Dhabi, we now have a methodology by which to rank them.
As with many great engineering challenges, the authors broke down the process of developing an effective MHI into a series of steps. First, they defined a series of six environmental variables that can affect the habitability of a particular environment for life. They then defined six types of environments that are generally thought to exist on many potentially habitable worlds.
Luckily, scientists have also collected data on life forms that thrive in the extremes of each of those six factors. Fromthat can withstand pressures of up to 125 MPa, Earth’s extremophiles give a good indication of what life might be able to contend with on other planets. Utilizing the highs and lows of the factors they selected, the scientists were able to determine the bounds an environment would have to conform to support life as we know it.
After collecting what data they could, they compared that data to the range defined by whether a microbe could withstand the ranges of environmental factors they would be subjected to at a given environment and, in so doing, came up with the MHI. The best way to summarize the outcome of their calculations is through a table showing the number of environmental factors that fall within the habitable range of extremophiles for each of the six environments selected as part of the study.
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