According To The Calculations, Earth Is Not As Habitable As We Think
Well, the results are in. Earth is not as habitable as we might think. The way scientists came about this was through their endless search for extraterrestrial life. And one good way to do that is knowing where to look. And to do that, they need to establish some parameters for where a planet needs to be and what other characteristics it has before it can be considered as habitable. And it might come as a surprise to many, but the number of potentially habitable planets that astronomers have spotted is rather low.
Now, maybe hey haven’t looked hard enough, or their criteria for selection is rather high. Now, according to their algorithm, even Earth, doesn’t rank at the top of their classification standards. For those of us who don’t really know what’s going on, it would seem that Earth would be considered the top of the tier and all other calculation would be based on that. But in reality, however, Earth has only scored an 82 percent in this habitability index.
Now, even though we’re certain that there’s life here on Earth, the numbers put us a bit too close to the Sun, and as a result, the hypothetical chances of life here are reduced.
“Basically, where we lose some of the probability or chance for life, is that we could be too close to the [Sun],” said astronomer Rory Barnes from the University of Washington. “We actually are kind of close to the inner edge of the habitable zone. If we spotted Earth with our current techniques, we would reasonably conclude that it could be too hot for life.”
What is the Habitability Index?
To help look for potentially habitable planets, this index takes into account several factors such as the planet’s proximity from its parent star, its atmospheric pressure, water, geology, and the amount of energy it absorbs from the star. Now, as Rory Barnes said if an alien species were looking for other signs of life from far away, and it was looking at Earth, based on this index, it might consider our planet to be a bit too warm. They might instead look at Mars for signs of life since the Red Planet is a bit further away from the Sun.
“Remember, we have to think about Earth as if we don’t know anything about it,” said Barnes. “We don’t know that it’s got oceans, and whales and things like that – imagine it’s just this thing that dims some of the light around a nearby star when it passes.”