In recent years, we’ve been hearing more and more about exoplanets – planets that orbit far away stars outside of our solar system. In a place the size of our galaxy, there are bound to be a few planets out there and we’re getting better at finding them.
Of course, the more planets we find, the more we wonder about whether or not these planets contain life.
Religious beliefs aside, it really is just a numbers game. In just the Milky Way Galaxy alone, you’ve got billions and billions of stars. If just a fraction of those have planets orbiting them, and a fraction of those are within the right distance and temperature, and a fraction of those…well, you get the picture. That’s still a lot of planets containing some form of life.
An interesting article was written today on CNN’s website. Entitled “Galaxy may be full of ‘Earths,’ alien life,” it reminded me of why I like looking up at the stars and wondering what’s really out there. In the article, one study that is pointed out relies on technology to help answer the guessing game:
“Researchers at the University of Edinburgh in Scotland constructed a computer model to create a synthetic galaxy with billions of stars and planets. They then studied how life evolved under various conditions in this virtual world, using a supercomputer to crunch the results.
In a paper published recently in the International Journal of Astrobiology, the researchers concluded that based on what they saw, at least 361 intelligent civilizations have emerged in the Milky Way since its creation, and as many as 38,000 may have formed.”
Sure, these are just the results of a computer model. We have trouble creating weather forecast models to tell us if it’s going to rain a few days from now, so how much credibility can we place in a model of a make believe galaxy? Still, to have a computer model lead us to a conclusion that at least 361 intelligent civilizations are out there in the Milky Way is, at the very least, intriguing.
On top of all this, keep in mind that there are billions of galaxies in the universe. It’s impossible for us to fully realize the number of planets that are out there.
I’m not saying that little green men in UFO’s have come to visit us, but I do firmly believe that intelligent life exists somewhere out there. Articles like this have always held a fascination for me and they always will. My question is how long will it be before we find little green men out there?