Did the gringa’s dear readers hear the news? The Earth’s report card has arrived and, well, it doesn’t seem to be all that bad. It’s a “B”, after all, 82%. That’s the grade the University of Washington’s Virtual Planetary Laboratory gave our lovely planet. What, exactly, does that mean?
By using what the laboratory calls the “habitability index”, our planet was graded on the likelihood of supporting life. It rated an 82%. The same guidelines used to determine the habitability of life on other exoplanets throughout the vast cosmos was applied to Earth and she got a “B”. Among these guidelines are factors like: atmospheric pressure, terrain, existence of water, etc.
The funny thing is that if we didn’t live here already, and sent out a probe to conduct an analysis of our planet according to this habitability index, we wouldn’t think the planet was inhabited or capable of sustaining life if we wanted to pay it a visit with boots on the ground. We would think it was too hot to support life. What? Yes. Our scientists would think it too close to our host star, the Sun. The gringa says, “That’s crazy!” I then have to wonder how many other planets out there in space have been deemed “uninhabitable” but, in actuality, could very well support life and possible may be doing just that?!
The researchers at SETI (Search for Extraterrestrial Intelligence) seem to be thinking along the same lines as the gringa. Now, SETI typically keeps a fairly low profile. However, with the discovery of exoplanets, there is renewed vigor in the organization’s work.
When work first began in the 1980s, SETI was not a group of ufologists looking for little green men. These were serious scientists who were actually skeptical that intelligent life existed in the universe other than here on Earth. And then the discovery of exoplanets was made. These cosmic bodies orbit stars just like Earth and our neighbors within our own Solar System.
In addition to the discovery of exoplanets, extremophiles were also discovered. These are living organisms that survive within an extreme ecosystem, such as bacterial ecosystems around a 700 degree Fahrenheit hydrothermal vent, surviving without sunlight and under extreme oceanic pressure. That means that life in the most basic form that evolved into all that populates our planet today can exist in outer space. In fact, it’s highly likely that it does, somewhere, we just have to find it.
You see, about 2,000 exoplanets have been discovered and that is just scratching the surface of an infinite universe. Mankind’s limited exploration abilities have yet to uncover what is likely to be hundreds of thousands, possibly millions and billions, of exoplanets. That dramatically increases the chances that somewhere out there is an exoplanet supporting life.
Consider that many of these exoplanets are much older than Earth. That means they have had plenty of time for bacteria to evolve into intelligent beings. Now, more than ever, is the gringa excited about the future of space exploration. The nearest exoplanet with a score high enough on the habitability index to consider a likely place to start in such a search is over 1,400 light years away. The gringa would rather go there than Mars.
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