Are we alone in the universe?
To those who have researched a̳l̳i̳e̳n̳ and U̳F̳O̳ phenomena around the world, that answer is an unequivocal “no.”
But to many mainstream scientists, the search for a̳l̳i̳e̳n̳ life has gone beyond sightings within the Earth’s atmosphere and near the ground to instead focus on faraway, distant planets and galaxies.
From the SETI Project that relies on sound to NASA Programs investigating planets within our own solar system, the list of attempts to contact or categorize a̳l̳i̳e̳n̳ life, or potential hotspots for a̳l̳i̳e̳n̳ life, is a long one.
Recently, researchers made what they believe to be a major breakthrough, however, developing a new method for identifying potentially habitable planets that could host a̳l̳i̳e̳n̳ life outside of our solar system.
Star’s Radiation Plays a Deciding Role According to New Technique
The method was pioneered by a team at Northwestern University in Illinois, and involved examining exoplanets orbiting red dwarf stars to determine the impact the radiation of a star and its planet’s rotation rate have on habitability, according to a report from The Daily Mail.
“If we can predict which planets are most likely to host life, then we might get that much closer to answering the question of whether we are alone in the universe within our lifetimes,” said lead author Howard Chen.
For the development of the new model, the team used a combination of 3D climate modeling and chemistry analysis. What they found was that an active star’s size and the size of a planet’s ozone layer also play a part.
That’s because radiation from such a star could lead to the surface water being vaporized, while a thin ozone layer would let in too much radiation, making the planet hazardous for complex surface life.
One of the key components for a planet to sustain complex life is its ability to retain liquid water, the team found.
If it is too close to the star, the water will vaporize, and if that’s too far, the water will freeze. If the surface does in fact freeze, the surface will not be warm enough to sustain complex life.
Which P̳l̳a̳n̳e̳t̳s̳ Could Possibly Sustain Intelligent Life?
According to the researchers, the planets in the middle are the ones most likely to be able to sustain complex life, an area known as the Goldilocks Zone after the fairy tale of the same name, the Mail article stated.
The name references the Three Bears, where Goldilocks finds that one porridge is too hot, one too cold and one is “just right.” This illustrates the importance of temperatures falling along the correct lines to sustain complex and potentially intelligent life according to the scientists.
In Search of…The Perfect Planet
The big question on the team’s mind is, “how close is too close for a planet to sustain liquid water? The goal is to find the ‘inner edge’ of a zone that could sustain complex life, ” Chen explained.
“The inner edge of our solar system is between Venus and Earth. Venus is not habitable. Earth is,” he said according to the article.
P̳l̳a̳n̳e̳t̳s̳ with thin ozone layers do not make the cut because they allow too much ultraviolet radiation to pass through and penetrate the ground, the article added. The level of radiation would simply be too hazardous.
According to Daniel Horton, a senior research on the project, there are many potential target planets being investigated currently.
While many U̳F̳O̳logists and enthusiasts would argue they’re looking in the wrong place, Horton and his team are determined to gather as much information as they can to make sure they’re covering all their bases.
“There are a lot of stars and planets out there, which means there are a lot of targets. Our study can help limit the number of places we have to point our telescopes,” he said.