Have aliens visited earth?

[TimM]

But how would they find us?

If complex life is common enough for highly advanced civilizations to be nearby, there would be many more planets with civilizations not as advanced, such as our own, also nearby. Many of these will be closer to them than we are.

If not, well, our own radio transmissions haven't gotten far enough from Earth yet to be received by anyone advanced enough to reach us. We've only been transmitting for less than a century, and 100 light years is not very far - 0.1% of the diameter of our galaxy.

Either way, finding us is like finding the proverbial a needle in a haystack. The only question is, are we one of many needles in a small haystack, or one of a few in a very big one.

[Morrek]

I think the real question is, what does being visited "look like"? And has -that- happened?

Besides, we already know things traveling faster than the speed of light, it's just not very well known yet and we have no way of using it (atleast consciously) at this time... I don't remember the details very well, but physisists have known for quite some time that a part of the atom(electron? or whatever I don't remember) is impossible to say exactly where it is, you can only say there's a chance it is at a certain place at a certain time. The thing is, this doesn't have to be anywhere near the atom's "centre" at all. There's a chance that it is on the other side of the universe in a split second while it was "here" right before, thus it "travels" extremely fast. So if you could find a way to manipulate this, you could effectively communicate with someone on the other side of the universe, more or less instantly.

Forgive me for not knowing all the details on this nor all the english words for it, but my brother majored or whatever it's called in physics and has explained this a couple times to me, and I've read a couple articles and parts of a book on the subject, although the articles were in swedish so I'm not sure about all the words.

I don't claim to understand much of this but it seems that the conclusion about using it as a way of communication is something we are working on right now, and maybe in x years we can use it for more than just communication, but also for traveling using the same technique, who knows? And who's to say "aliens" haven't been using this for thousands of (earthly) years?

[The Truth]

[ QUOTE ]
I think the real question is, what does being visited "look like"? And has -that- happened?

Besides, we already know things traveling faster than the speed of light, it's just not very well known yet and we have no way of using it (atleast consciously) at this time... I don't remember the details very well, but physisists have known for quite some time that a part of the atom(electron? or whatever I don't remember) is impossible to say exactly where it is, you can only say there's a chance it is at a certain place at a certain time. The thing is, this doesn't have to be anywhere near the atom's "centre" at all. There's a chance that it is on the other side of the universe in a split second while it was "here" right before, thus it "travels" extremely fast. So if you could find a way to manipulate this, you could effectively communicate with someone on the other side of the universe, more or less instantly.

Forgive me for not knowing all the details on this nor all the english words for it, but my brother majored or whatever it's called in physics and has explained this a couple times to me, and I've read a couple articles and parts of a book on the subject, although the articles were in swedish so I'm not sure about all the words.

I don't claim to understand much of this but it seems that the conclusion about using it as a way of communication is something we are working on right now, and maybe in x years we can use it for more than just communication, but also for traveling using the same technique, who knows? And who's to say "aliens" haven't been using this for thousands of (earthly) years?

[/ QUOTE ]


good post.

This is the quantum eraser experiement it explains some of the ideas if anyone is intersted:

http://www.bottomlayer.com/bottom/ki...scully-web.htm

blake

[andyfox]

There are probably 100,000,000,000 galaxies, each containing an average of 100,000,000,000 stars. Yet a cathedral with three grains of sand in it is more densely packed than the universe.

I'll let others do the math.

[wacki]

[ QUOTE ]
There are probably 100,000,000,000 galaxies, each containing an average of 100,000,000,000 stars. Yet a cathedral with three grains of sand in it is more densely packed than the universe.

I'll let others do the math.

[/ QUOTE ]

* For 1,000,000 civilizations in the galaxy
o the average distance between them will be ~ 150 ly!!!
o two-way communication will take at least 300 years!
* If the lifetime of a technical civilization is less than 3000 years
o Average distance is so large that civilizations will die, on average, before two-way communications can be established!

http://instruct1.cit.cornell.edu/cou...o101/lec35.htm

[CCass]

Of course they have been here before. Who do you htink built the pyramids?

[MrMon]

[ QUOTE ]
Of course they have been here before. Who do you think killed the dinosaurs?

[/ QUOTE ]

[ChipWrecked]

Project Serpo

Not only have they visited, we did an exchange program with them.

(jk, but this is good reading if you like sf.... physics don't work right on Serpo, oh well.... [img]/images/graemlins/smile.gif[/img])

[MonkeeMan]

Even if you didn't like Men In Black, just look around...they're everywhere man.

[wacki]

murchinson meteorite

chiral proteins

CO2 cycle on mars. indicates life

Posted a million times.

http://www.space.com/scienceastronom...fe_050216.html

Not going to explain more. DOne it million times.

Oh, jason_t = full of [censored].