Exobiology: Extraterrestrial Life forms

I have this major research project about the perception of individuals about the existence of interstellar lifeforms. So i think you could help me about your own thoughts, I will be very grateful of your perception... and I am very honored to include you on my reasearch.

 

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Welcome to sciforums, enjoy your stay.

The idea that life is impossible elsewhere is an oxymoron. The fact that it could be an idea already contradicts its speculation.

 

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Welcome to sciforums, Raim. Please do not cross post the same message in different forums. That is a no-no here.

 

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Thanks guys

I thank you all for your concern and for helping me out here... sorryy for the late reply... sorry for the thread in other forums coz at first i was hesitantly in browsing this site... but now i know this was a great site.... please guys help me more about my investigatory project... I will be glad to hear something from you...

 

depends what u mean

intelegent or just life

because for starters there is potentual evidance of life from mars

then there is the way bacteria are distributed in the atmosphere which points to contamination from above rather than below

there is also the probability thing that says with so many chances there HAS to be more than one mathmatically speaking

 

extraterrestrial life on mars...

mars life forms....
many theories have been speculated
the existence of bacteria on mars...
but could be those bacteria a result of microorganisms
here on Earth?

how about the ET's on other planets?
could SETI have an contact with them?

 

Have you heard of the "WOW!" signal? The people at SETI got exactly what they were looking for in the seventies I think, but the signal stopped and they couldn't find where it had originated from. It's the only evidence of intelligent, extraterrestrial life.

 

as I heard on Discorery they traced the signal , but no matter how long they continued to listen at that dirrection they heard nothing more

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btw- I'm more scared and worried than happy that one day we would locate intelligent life that is more advanced than us.

btw - one law states that the more advanced civilization will find the less advanced one faster than it locates the more advanced

 

Yeah, I'd bet that the more intellectual type of civilization would hide in the background, watch us develop as we spread across the cosmos. We'll probably find some pre industrial humanoid societies once the costs of spacetravel are cut, and we'll totally screw them over and enslave them....gahh, history often repeats itself, in fact it always does. Hopefully the intellectual ones, if they exist, would intervene.....

 

I hope that not - you risk us becoming the slaves

 

wow

Let me emphasize that the "Wow!" sequence itself is not a message. What was received appeared to be a CW (unmodulated) signal. The numbers and letters in the much-reproduced computer printout are merely a time-series representation of the signal amplitude, as received at the Big Ear radiotelescope. Specifically, the symbols represent the number of standard deviations by which the received signal exceeded average background noise, on a scale of 0 to 35. So a 0 means no stronger than background noise, 1 is one sigma above noise, 9 means nine sigma above noise, an A would be ten units, and U (the strongest peak of the actual signal) is 30 standard deviations above the mean background noise in the receiver. If you graph the sequence as amplitude values over time you get roughly a Gaussian distribution, consistent with the antenna pattern of the Big Ear in drift-scan mode. The data set depicts signal amplitude over both frequency and time.

Figure 2 shows just such a graph of the output of the Ohio State 50-channel receiver during the transit through the antenna pattern of the "Wow!" source. Time is plotted horizontally, amplitude vertically, and frequency in the depth axis. The time increments are twelve seconds per sample. Each of the channels is 10 kHz wide; thus, a half MHz surrounding the hydrogen line is depicted. Note that the signal rises almost 15 dB above the background noise, in a single channel, then falls back into the noise, its amplitude pattern exactly coinciding with the known beamwidth pattern of the dish (including its feed-induced skew, and coma sidelobes).

From the "Wow!" signal's temporal correspondence to the antenna pattern, we know that its source was moving with the background stars. From its Doppler shift signature (the local oscillator of the receiver was being chirped at a rate which corresponds to the Earth's motion with respect to the Galactic center of rest) we can eliminate terrestrial interference, aircraft or spacecraft from consideration. The antenna coordinates indicated that the signal was coming from no known nearby sun-like star, though at any time, in any direction, the antenna pattern encompasses on average about half a dozen distant stars. Most significantly, though over a hundred follow-on studies of the same region of the sky were performed, from several different radio observatories, the signal never repeated.

"Either the Wow! signal was the intercepted radiation from another civilization, or it's a previously undiscovered astrophysical phenomenon. Either possibility is mind-boggling. " (shuch)

Dr. H. Paul Shuch

 

could it be a spacecraft?

 

http://www-691.gsfc.nasa.gov/~ice/LabPage/interste.htm
http://www-691.gsfc.nasa.gov/marla/interste.htm

What you need to know about life in space is that the materials required for life, and the conditions under which those materials are stimulated by heat, chemical interactin, et cetera, are all incredibly common. The greatest concentrations in open space are of course in nebulae, and that just happens to be where stars and their accretion discs come from. Every star system has loads of all sorts of the right materials. There are more stars than we can count. Lately we are discovering planets in other star systems all over the place. They're everywhere, just waiting for our detection abilities to improve. Every single system is loaded with all sorts of molecules and compounds, and every single system has a star providing some heat; and every system with planets provides a spinning, orbiting laboratory with various chanegs affecting those chemicals constantly, at a far greater rate (due to volume) than could ever be achieved in an actual lab.

What does all this mean? The opportunity for life is everywhere. The only difference between the common organic molecules and cells is time. And the only difference between cells and intelligence is time.

 

I think we all know and understand that

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this isn't a religion forum

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if the star explodes- time is out
(of course if some debris with primitive cells isn't thrown to another star system->planet)

 

Aliens.. Aliens...

Alien makes us wonder lots of many things.... is it true, that there have been alien abduction here on earth? is the sightings true? what about the crops circles? are they for real?

 

I'm going to formulate a crazy theory...

Maybe...maybe these aliens were in this massive spaceship, and the ship exploded, but this one guy escaped in a spacesuit, and he activated the standard radio that came with it, and swung his head around to talk to his friends that were also with the convoy. The radio, when he activated it, began broadcasting a signal that would first alert other radios that this one had been activated. We got that transmission, but nothing more.

Despite their massive size, the spaceships would be impossible to see using conventional means.

I'd rather be the slaver than the slave myself, but if they really are that smart they've probably gone beyond such an archaic practice.

 

you believe it :bugeye:
ok- hope you're right

 

It is self centered to think we are the only life in the universe.

 

A point against extraterrestrial life...

Ever hear of the Fermi paradox? For those that haven't, Fermi speculated that if a civilization sent out a colony to another world, then in a generation, they both sent out a colony, in 1000 years the galaxy would be populated if that continued for each colony. All inhabital worlds in the galaxy would be taken.

So where are they?

 

There are problems with the paradox:

1) It assumes that life elsewhere has evolved into a civalization.
2) It assumes that life elsewhere has evolved before we have.
3) It assumes that a civalization is going to create a colony at a given rate.
4) It assumes X amount of planets are habbitable.

Simply put, it's all guesswork. Forgive me, but there is in my opinion more scientific proof to say that life might be on Mars than there is to say that this paradox is reasonable.