Aliens Are They Real?

Simple do you think Aliens exist? Do you think they have visited earth? Do you think that they have ever really got into contact with us? Have you ever seen a UFO? All things alien on this thread.

No
No
No
and No

I think there may be organisms in existence far beyond where human's will ever get to, but we'll never know.

Yes,
Possably,
No,
No.

to believe that the Earth is the only habited planet in the universe, which is far bigger than we imagine. So logic should tell us that there is something else out there. What it is, or what it looks like, i couldn't tell you.

Yes
No
No
No - seen some very strange lights once, hovering silently and a big distance apart in the night sky, but not willing to suggest it was a UFO!

The universe is so big that there has to be conditions suitable for life, most likely in numerous places. However, that life could be anything ranging from bacteria to ruddy great slimy things. Anyway, enough talk about Russians...

The human race is the most miniscule of blips in time, and the likelihood of us co-existing at the same time as aliens, and them being close enough to contact or see is the most unlikely thing about it all. A great shame, but true.

I've seen many UFOs, but I doubt if any of the were alien in origin, they were simply unidentified.
Alien lifeforms must exist and as others have said, the universe is just too big to comprehened, so statistically speaking there are probably millions of planets out there that support life, whether any of those life forms have ever visited earth, who knows, I'd expect so, but whether they've been here in the last 10,000 or so years, just seems unlikely.

I watched Danny Dyer's "I believe in UFO's" and that converted me.

no no no no

100% certain they exist, however almost 100% certain they'll have never been to Earth, given the distances involved.

100% certain they dont exsist to be honest.

That's nonsense, cf! Top scientists say they almost certainly do, given the possibilities.

The Drake Equation:

Trying to calculate the probability that extraterrestrial life exists in the universe is actually quite complicated. The universe isn't a static environment. Stars are born, they live and they die. Some stars form in association with planets. Others don't. Only some of those planets have the right conditions to support life.

Life is a tricky variable in its own right. Some planets might support complex organic molecules -- proteins and nucleic acids -- and nothing else. Other planets might support simple, single-celled organisms. And still others might support multicellular organisms, including those advanced enough to develop the technologies to travel or send signals into outer space. Finally, even organisms that have adapted extremely well to their environments don't last forever. As both the dinosaurs and the Roman Empire illustrate here on Earth, all dynasties come to an end, be it cataclysmic or otherwise.

Fra­nk D­rake had to account for all of these variables in developing a formula to quantify the odds of finding extraterrestrial life. His first task was deciding what he wanted to calculate. First, he limited his thinking to extraterrestrials in our home galaxy -- and only those that might be capable of interstellar communication. Then he inserted a mathematical factor to account for all of the conditions required to enable such civilizations to evolve. The result is the following formula:

N = RfpneflfifcL

In this equation, N is the number of detectable civilizations in our galaxy. The other variables are described below:

R is the rate of star formation in the galaxy
fp is the fraction of stars that form planets
ne is the number of planets hospitable to life (i.e., Earth-like planets)
fl is the fraction of these planets on which life actually emerges
fi is the fraction of these planets on which intelligent life arises
fc is the fraction of these planets with intelligent beings capable of interstellar communication
L is the length of time such a civilization remains detectable

The only variable known with any degree of certainty is the rate of stellar formation, R. In the Milky Way, a typical spiral galaxy, new stars form at a rate of roughly four per year [source: Cain]. The variable astronomers feel most uncertain about is L, the length of time a civilization remains detectable. A variety of estimates have been used for L, ranging from 10 years to 10 million years.

Astronomers can make educated guesses about the rest of the variables. For example, of the nine planets in our solar system, only four are what astronomers call terrestrial planets -- those that have a solid surface. Of those terrestrial planets, only Earth supports life. If we take our solar system as representative, then we might argue that ne equals 1/4 or 0.25. Similar guesses have been made about the other variables and, interestingly, they all end up having very similar values, usually in a range between 0.1 and 1.0. So, a typical calculation might look like this:

N = 4 x 0.5 x 0.25 x 0.2 x 0.2 x 0.2 x 3,000,000

which gives us a value of 12,000 civilizations in our galaxy.

Drake's original calculations were very close to this value for N. When he ran the numbers, he predicted that there might be 10,000 detectable civilizations in the Milky Way [source: Garber]. Carl Sagan, a leader in the SETI movement until he passed away in 1996, was even more generous when he suggested that 1 million civilizations might exist in the galaxy [source: Lemarchand]. That's a lot of ETs!

Yes we Do excist
I have lived on earth for over 40 of your human years ( i am 2089 in my years)
I have contacted humans over 13,000 times
My family visist regulary



Yes , Maybe , No ,No
Seriously i find it hard to believe we are the only intelligent beings in the universe .

Fists of Fury wrote:That's nonsense, cf! Top scientists say they almost certainly do, given the possibilities.

my opinon isnt nonsense fists.....top scientists have said plenty of stuff in the past, and will say plenty of stuff in the future dosent mean its right...im entitled to my opinon, and i dont think there is aliens.

There is no such thing as space or the Universe, God just throws a 3D blanket over the Earth and we see what we want to see

I God...he's awesome

Yes
Its possible
I doubt it but all these 'gods' from ancient civilizations could have been something to do with it, even the god that I believe in and that Christains, Jews and Muslims believe in.
No, I've seen some weird things but nothing that weird.

It would be mind boggling if there were no other civilzations out there but its likley we will never know for sure. Its an interesting debate though.

cricketfan90 wrote:

Fists of Fury wrote:That's nonsense, cf! Top scientists say they almost certainly do, given the possibilities.

my opinon isnt nonsense fists.....top scientists have said plenty of stuff in the past, and will say plenty of stuff in the future dosent mean its right...im entitled to my opinon, and i dont think there is aliens.

I believe solid scientific theory over your opinion, mate

well thats up to u, i just dont believe any of it.

Yes
No
No
No (again seen some strange things but nothing I would with confidence say were UFO's)

A few years ago I read 'Chariots of the Gods', it convinced me that we had been visited by aliens (cave drawings of astronauts )

I remember at the time of reading it that I wanted to believe in aliens.......now I'm not so sure.

I might read it again, with a more open mind this time.

Anyone else read it?

I have read one of his books, Solerina called "Return of the Gods" most certainly an interesting theory and to be fair the evidence he gives is a bit compelling at the time of reading, but I still hold a fair amoutn of skeptisism.

Electric Demon wrote:I watched Danny Dyer's "I believe in UFO's" and that converted me.

So you think Danny Dyer is an alien too?

And I would discredit anythig that Cricketfan says - he doesnt like the US X Factor for goodness' sake! And besides, CF is 100% certain they dont exist. Proof enough for me.

AlexHuckerby wrote:I have read one of his books, Solerina called "Return of the Gods" most certainly an interesting theory and to be fair the evidence he gives is a bit compelling at the time of reading, but I still hold a fair amoutn of skeptisism.

Thanks Alex....I might look out for that.

KingKenny7Heaven wrote:Seriously i find it hard to believe we are the only intelligent beings in the universe .

Sometimes I find it hard to believe we're intelligent beings.

Adam D wrote:

Electric Demon wrote:I watched Danny Dyer's "I believe in UFO's" and that converted me.

So you think Danny Dyer is an alien too?

And I would discredit anythig that Cricketfan says - he doesnt like the US X Factor for goodness' sake! And besides, CF is 100% certain they dont exist. Proof enough for me.

gee thanks

Simple do you think Aliens exist?

According to Nasa one Galaxy can support 12,000 planets like Earth. If the Universe is still expanding into infinity then it's impossible for there not to be some kind of life outside our planet.

Do you think they have visited earth?

No because any other civilisations looking for life would not likely look to this galaxy, were not in an obvious place to look for life.

Do you think that they have ever really got into contact with us?

I think Nasa have found radio signals of an artifical nature, but they would never be allowed to release such information. It makes no sense to build telescopes to look into other galaxies, yet close down the one thing which could make such a search far easier. The Seti program.
If were looking for life then surely we should scan the alien galaxies for radio signals, then once we find them, then look for habitable planets.


The world would go crazy if life on an alien world was discovered, humanity is happy sitting on top of the food chain, and would be very nervous if anything knocks off our pedastal.

Have you ever seen a UFO?

Yes but I realised it was my dinner coming towards me after my partner threw it at me when I moaned about her cooking. I have learned to eat it first then criticise, not criticise before I eat it.

AlynDavies wrote:

Simple do you think Aliens exist?

According to Nasa one Galaxy can support 12,000 planets like Earth. If the Universe is still expanding into infinity then it's impossible for there not to be some kind of life outside our planet.

Do you think they have visited earth?

No because any other civilisations looking for life would not likely look to this galaxy, were not in an obvious place to look for life.

Do you think that they have ever really got into contact with us?

I think Nasa have found radio signals of an artifical nature, but they would never be allowed to release such information. It makes no sense to build telescopes to look into other galaxies, yet close down the one thing which could make such a search far easier. The Seti program.
If were looking for life then surely we should scan the alien galaxies for radio signals, then once we find them, then look for habitable planets.


The world would go crazy if life on an alien world was discovered, humanity is happy sitting on top of the food chain, and would be very nervous if anything knocks off our pedastal.

Have you ever seen a UFO?

Yes but I realised it was my dinner coming towards me after my partner threw it at me when I moaned about her cooking. I have learned to eat it first then criticise, not criticise before I eat it.

I think you need to remember that such satellites are not built with the sole purpose of searching for extra-terrestrial life, and are as much to study the galaxies, their matter etc as anything else, more so, in fact.

Take a look at this link that shows the probability of encountering alien life. Doesn't seem too likely, though there is of course alien life out there somewhere, and it'd be fantastic if we found something.

http://en.wikipedia.org/wiki/Drake_equation

I think if they were really here then England wouldve selected at least one for the cricket team by now.

crop circles cannot be explained, for that reason I believe they exist these days.

PSW
How can you tell that they haven't? Clearly Derek Pringle must be capable of some Jedi-esque mind control to have made the selectors believe he was 'the new Botham'

JM
Crop circles can be and have been explained - mostly formed by the effects of an excess of scrumpy on the human brain .

More seriously, the concept that we live on the only inhabited planet in the Universe does require a suspension of logic. Even if the chances of life forming in the conditions on the primitive Earth were a million to one against (and given the timeframe involved, it is generally considered that the likelihood was far better than that), the number of potentially Earth-like planets in the universe means that alien life is a certainty somewhere else.

As for whether they have visited Earth, that would only be probable if faster than light travel is possible - in our current understanding of physics, this does not seem to be the case, although noting that even Einstein may well be proven wrong at some point in the future.

crop circles cannot be explained, for that reason I believe they exist these days.

People have admitted to doing crop circles...

Also, I don't think anybody denies the existence of crop circles, rather that aliens created them, there isn't really any way to dispute the existence of the actual circles.

cricket fan- how can you be certain?

of course there are possibilities of other life forms on other planets- infact there are infinite possibilities.

they could be a world out there that lived and died in a day of our time- but in there space time it could have felt like 10 million years!

or maybe i watch to much red drawf

Fists of Fury wrote:100% certain they exist, however almost 100% certain they'll have never been to Earth, given the distances involved.

fists i cant be certain on anything i havent seen- however any other life form may be way more advanced than us- distance isnt material with infinite possibilities.

"As for whether
they have visited Earth, that would only be probable if faster than
light travel is possible - in our current understanding of physics, this
does not seem to be the case, although noting that even Einstein may
well be proven wrong at some point in the future."

i think it is very close to being disproven - it was going on last year- with those particles traveling from switzerland to italy quicker than light

mystiroakey wrote:

i think it is very close to being disproven - it was going on last year- with those particles traveling from switzerland to italy quicker than light

National Express coaches come pretty close to it on the motorway as well, unless they are overtaking each other on a hill, in which case they are barely travelling faster than the speed of gravity.

you took me back to the times i used to get on those things- lol- it used to take 8 hours to get to newquay !!

Interesting thread this.

you have to consider that there must be habitable planets in the universe that can sustain multicell organisms.

Hence they can evolve. If they can evolve it means that somewhere out there must be varied advanced forms of life.

Non of them advanced enough though to travel the vast distances of space with the sufficent technology to get here in their lifetimes.

So although I believe with an ablsolute certainty that there is alien life forms out there, they are not far enough advanced to visit us or communicate with us.

Otherwise they would have been here already and shown themselves

Has Star Trek taught you nothing?

The first directive says that you can't interfere in other planets evolution. Is it so implausible that aliens have been here but not contacted us and remained hidden?

Aliens dont have to be humanoid or have human tendencies. They could have life spans of thousands of years. They could be able to withstand wild temperatures,so could live on a completely different eco system.

For all we know, peanuts could be aliens (which would explain some peoples allergies to them).

No one can say with 100% fact that they don't exist and that they havent been here.

Other than ET who I have locked up in my tool shed, of course.

I thought he went home?

biltongbek wrote:Interesting thread this.

you have to consider that there must be habitable planets in the universe that can sustain multicell organisms.

Hence they can evolve. If they can evolve it means that somewhere out there must be varied advanced forms of life.

Non of them advanced enough though to travel the vast distances of space with the sufficent technology to get here in their lifetimes.

So although I believe with an ablsolute certainty that there is alien life forms out there, they are not far enough advanced to visit us or communicate with us.

Otherwise they would have been here already and shown themselves

bilt anything is possible- the physics in our unverse or earth doesnt have to exist in others

They would certainly have a long way to travel to get here. I saw this graphic on the BBC.

http://www.bbc.com/future/bespoke/space_infographic

(Not really to do with aliens but I saw that thing on the BBC, thought it was pretty cool and wanted to find somewhere on here to share it - this thread was the closest thing I could find to something relevant.)

we cant access that site from the uk chinese dude!! its bbc international

Yeah if there's any way you can upload the image for us to see that'd be handy!

Ok, I hope this works. The picture is actually in 5 parts on the website as it's so big.

Note that the scale used in the images gets changes as we get further into space.

Spoiler:

Spoiler:

Spoiler:

Spoiler:

Spoiler:

I'm not sure why you can't access it in the UK either but this link is for the BBC Science page, which is on the .co.uk site. When I try to look at this image though, near the bottom of the page, it takes me to the bbc.com site. One more thing, Fists. I had to read the thread about uploading images to learn how to do this and it said no images should be uploaded into the off-topic section so I hope this is ok.

Spoiler:

Il Gialloblu, that was cool, thanks mate.

wow i didnt realise we had sent a probe to 17 bill km away, the universe ends at 21 bill km.

How have we manged to send something that far in such a short space of relative time.

cheers for the pics dude.

some are abit mangled but most are good!

Thanks Il Gialloblu, that was interesting.

mystiroakey wrote:wow i didnt realise we had sent a probe to 17 bill km away, the universe ends at 21 bill km.

How have we manged to send something that far in such a short space of relative time.

cheers for the pics dude.

some are abit mangled but most are good!

You've got that mixed up, the 21,000,000,000 km mark is where our suns influence ends, our own galaxy is approx 9,000,000,000,000,000,000 kms wide and the observable universe, as we can measure it, is 460,000 times that size, those figures are just too big for anyone to comprehend, so to put it another way, if we were at the centre of a tennis ball and the Voyager 1 probe was on its surface, the edge of the obsevable universe would be as far away as the sun...I think, though you'd have to ask an astronomer to be sure

Wow, fascinating stuff. I had no clue just how far we had sent probes.

Amazing creatures, aren't we, but oh so insignificant in the grand scheme of things.

I have nothing but admiration for people that investigate these things. Its so time consuming and must require loads of patience.

We are the Aliens!