1. The edge of the observable universe (relative to Earth) is 46.5 billion light-years away [1], not 5 million light years.
2. Humans have only observed a sliver of a fraction of that area.
3. Even if we can visually observe a planet it is almost impossible for us to determine what is on it.
[1] - Observable universe - Wikipedia, the free encyclopedia
Ummmm....no. The universe is only 15 billion years old or so, and since we can't see further than the light carrying the picture, our radius of view is 15 billion light years.
I'm talking about the distance that we can determine the physical properties of planets. Given that we humans are not even close to being able to travel one light year, my point stands.
The fact that we humans cannot travel any significant distance in space means that for all practical purposes, we are alone in the universe.
This depend if they are more intelligent then us. They will be our enemy.
Dirtpoorchris- Do you go around being hostile to every bird, dog, cat, and ant? Let me know when you are waging a war on pandas because they are dumber than us. I wish to join. And when we have conquered the species... I shall rule the pandas with an iron fist!
This I agree with; the universe has no size limit, no age limit...I do not think that time even applies, this is for our convenience here in our little corner..You found the product tag on the universe? I would think the universe would be infinite years old.
I'm talking about the distance that we can determine the physical properties of planets. Given that we humans are not even close to being able to travel one light year, my point stands.
The fact that we humans cannot travel any significant distance in space means that for all practicle purposes, we are alone in the universe.
Not really, our limitations only apply to us, not them..
I see no reason why we should be the only ones...But this we may never know...and I do believe in the power of man's imagination, but not true aliens....I reject all of the "ETs visiting us", and aliens in our midst.....conspiracy theories..
What does traveling have to do with anything? I'm talking about observing the universe.
I never stated otherwise. This whole conversation concerns the possibility of intelligent life elsewhere in the universe.
...and if you had read my posts, you would have seen that I said there could be other life, but in the distances that we can observe there is none, and that for all practical purposes we are alone.
The emboldened portion of your post is an assumption sans evidence.
Really?
Can you point to the scientific article that states we have observed life elsewhere or even an inhabitable planet? :shock:
No, can you point me towards the scientific article which states definitively there is no intelligent forms of life within our observable sphere of the universe?
Yes.
Every scientific observation so far.
Have you seen a 4 leaf clover with your own eyes? Many have not if you have. I would think that if there was aliens they would be able to be almost as good as invisible to us. And if they could get to us chances are there technology would be good enough to stealthily asses us and never greet us even.
Yes.
Every scientific observation so far.
Well, that's fine if you want to go off into fantasy and wild speculation, I try to stick with science and logic.
You have absolutely no idea what you're talking about. There is no such article because no one is dumb enough to claim definitively that intelligent is nonexistent within our sphere of the observable universe. The correct answer is that we do not know.
If I showed you a large box would you be able to claim definitively that there wasn't a baseball inside it? No, you couldn't, because you do not know what's in the box, much the same as we do not know what resides within the vast, vast majority of the observable sphere of the universe.
Yes it did.
but for the 5 million or so light years that we can see in every direction, there are none.
It is wrong to make an assumption that this is fact...
We are going to send a probe on a nearby moon with ice covered water to see if there is life....WE DON'T KNOW YET and this is a VERY close neighbor.
Sorry, but we can measure hydrogen, carbon, and oxygen at very great distances.
Yes, we are sending a probe to earths moon to look for possible ice, but not to look for life.
I was refering to another moon...
Here is a recent article in Time:
The Salty Waters of Saturn's Moon Hint at Life- June 26, 2009
http://www.time/health/article/0,8599,1907238,00.html
Saturn? A planet like that could never sustain intelligent life forms, hopefully however, even some bacteria will be an absolute scientific breakthrough.
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