Will Space Aliens Ever Come To Earth? Or Have They Already?

It’s probably one of the oldest questions asked by people both past and present. Are space aliens here? I really and truly believe that the universe has other life forms, of all types, spread out all over the countless galaxies. Plant life, animal life, and intelligent life. With all sorts of activities going on, highly advanced societies, invasions maybe, or wars, explorations, and so on. And all within their neighboring stars and galaxies. But I just don’t think they’re here on our world. Here’s why I don’t think so. Let’s look at it from a human perspective.

Let’s assume that space aliens are actually here. If they’re here at all, then they have to have traveled here, am I correct? Now let’s discuss space travel. There are three kinds of space travel. Interplanetary, interstellar, and intergalactic. We here on earth can live only to about 70 to 100 years before we die, so really long space travel is out of the question for us, and we’re pretty much restricted to interplanetary space travel, and there are even limits for that. It’s something we have no experience with, at least not manned interplanetary travel. And if for some reason  we wanted to travel to our solar system’s furthest planet, Pluto, it would take us about 23 years one way. A married man would probably not go and a single man would probably go, since there would be women crew members on board, but how could both of them plan a future together? Life for 46 years? On a space ship? Going stir crazy?

But wait! Couldn’t an astronaut be put into some kind of cryogenic sleep? Sure, it’s possible but for them to come back home after 46 years, many of their family and friends gone, their children now seniors with their own grandchildren. We’re just not cut out for very long treks across space. And they these unlucky hero’s might even be required to spend at least a few years on Pluto to make the trip worthwhile. So better make that an even 50 years. Now, it’s possible that our solar system has life on one of our eight other planets (or seven planets if you don’t include Pluto), but probably not intelligent life. So an interplanetary journey would only be worth it for science, research, and for other reasons, but not for finding intelligent life forms.
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What if we discovered another life form on a planet that was circling around another star? The first thing that comes to my mind is how would we discover that? But let’s put my doubt on hold for just a bit. Let’s say we know that there is life on a planet orbiting a faraway star. And that this life was indeed intelligent. I very much doubt we would bother to travel there due to the great distance and the very great expense, and great risk, of such a journey. But which star this planet is orbiting around would be pretty important too because the closest star to our very own Sun is approximately 4.25 light years away. But suppose that’s not the star with the populated planet. We might find life on a star that’s even further away.
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And if what if we discovered life on a planet in another galaxy? Well you can just forget about it! It’s just too far.
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But besides the immense distances and our rather short life spans, there is the question of expense. Would it be feasible to build a ship that was durable enough (it would have to be), with enough fuel, and certainly enough provisions, not to mention the amount of intense training required to make the trip to even another star? I don’t think so. Not even if we found out that another planet on a nearby star, while devoid of life, did have at least an abundance of pure gold, diamonds and other rare and precious metals and stones. But now that you understand the problems with such a trip would entail for us, you can appreciate that an alien life form would also have.
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What about life span? How long do they live? 100 years? 1,000 years? Or longer? If they lived to 1,000 of our years, that would help a very little bit, but it wouldn’t be enough for a long trip. Would it be worth it for them to come here? It could be, but if they’re indeed here, why do they make themselves so scarce? Assume that they’re here for a minute, well if they’re here, why are they here? For what purpose? They haven’t made contact (I don’t believe), and they haven’t stolen our resources, assuming they wanted to. But how do we know that would want our resources? That’s something that a human from earth would want. Aliens may be very strange to us. We always assume that they’ll be humanoid (having a head, a torso, two arms, and two legs) but they may not be. And what they want may be beyond our understanding. They may communicate in a way that we couldn’t understand. And it’s even possible that they have come and gone a long time ago and were adept at erasing all evidence of their prior visit! Or if the evidence is still around, we might not understand it enough to recognize it. I could go on and on but I think I have made my point..
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Warp speed? Transport systems? Possibilities, but only possibilities. Suppose not?
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Ladies and gentlemen, I truly believe there are life forms out there. In fact, I also believe that there are an abundance of intelligent life forms spread out in thousands of galaxies all over the place, and that they have developed societies and study art, science, religion and so on.
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I just think they probably have better things to do, or are involved with other life forms that are closer, and more interesting and advantageous than we are. I don’t think they want to bother with us. Even if they could.