Apparently, we have a lot more neighbors – by neighbors I mean planets 40 light years from earth – than was previously theorized. Scientists have estimated that there are millions upon millions of planets in our galaxy, and there are more galaxies than we can count. So it stands to reason that there is life out there, intelligent life. Perhaps there are people just like us on an earth-like planet around a distant star, wondering about whether there are people like them out there in the universe. And here we are.
But the problem is the space between us. Space, outer space, is immense, dark, cold, and unforgiving. And the vast distance between us and and our nearest stellar neighbor is expressed not in units of distance, like kilometers, but in the time it takes for light to travel between them. In the case of these seven new worlds, 40 light years indicates the time it takes light to travel from there to here, i.e., 40 years. It goes without saying that we don’t have the technology to travel at even one tenth the speed of light. For the sake of argument, however, let’s pretend we can; but even so, the trip would take 400 years! Our intrepid space traveler would not survive the trip.
Taking a step back from this conundrum, we find ourselves simply daydreaming of the possibility of reaching the stars. The prospect is the stuff of science fiction literature and movies. Some writers have imagined visitors to earth would be hostile, while others like to imagine the likes of “ET”, a curious traveler who means no harm. You have to consider that our first efforts in reaching out beyond our solar system have been with probe-type spacecraft.The Voyager and Pioneer missions were launched with the hope of retrieving data from the farthest reaches of our solar system, as well as the space that separates the stars. After more than 40 years, it is still not possible to send humans into deep space. So we sent robots. I would expect our first encounter with extraterrestrials to be made in a similar way, by intercepting one of their probes and deciphering the cryptic, albeit rudimentary messages found with it.
More than distance would separate us. Consider that here on earth, cultures are divided by language and custom, and sometimes this is between neighboring countries. Here in Texas, there are people who speak only English, and those who speak only Spanish. Communication is not so easy, and we’re talking about people who live on the same street. Assuming alien beings from another planet even possess spoken language, the chances of being able to communicate effectively are very slim at best. (For more on this, I recommend seeing the movie “Arrival.”) But if we are somehow able to communicate, experience on earth tells us that that is not enough. Many people on this planet speak English, and that makes it easier for us to understand one another. But cultural difference abound, like the way we eat together, the way we greet each other, and the attitudes and customs of each group. For instance, people in Latin America tend to stand very close to the other person in a conversation. In other parts of the world this might make people very uncomfortable.
As much time and energy we have put into speculating about other worlds, perhaps they are doing the same. Or maybe not. It is possible that other worlds, even those capable of traveling to the stars, simply lack any curiosity when it comes to exploring the galaxy. It seems very unlikely. The others, the ones like us but not exactly, are probably exploring, just like us, but not for the purpose of making contact once a discovery is made. Perhaps they don’t care at all about their neighbors. Maybe we don’t matter that much, like our attitude toward the birds in the trees. We are aware of them, and we would miss them if they went away, but an individual bird is not important. It seems rather cold, but it’s possible our visitors are not emotionally invested in us. We’re simply a curiosity.
I like to think earth is special. But maybe we’re not remarkable in any way. Maybe there are millions of earths out there, much like this one, where “people”spend their days solving one problem at a time and raising their children and trying to make it one more day. Maybe all they want to do in their free time is to relax and enjoy their short lives, trying to forget how brief life is on their planet, and that it’s not worth their time to speculate about the vastness of space and the impossibility of reaching the stars, at least for the average person. Because space is huge, cold, dark, and inhospitable. Cue the song: