I am talking about life beyond our solar system, or say within our solar system, suppose there are life forms just like us, not exactly in the appearance. They may be not developed technically, or they may be in a very "early generation" process. I think earth like technically developed planets are "nil", or may be beyond our contact.

secondly the distance may be a second problem for them. Thirdly they don't have that "reaching vehicle" with them, or they do not have any communication skills yet they have to develop fully.

But certainly we can say that there may be somebody(or something different spacies are living beyond our earth.! Actual forms, actual destination all things are unknown to us, because we have some limits to go in the wider space.

Do you think that in the next hundred years we will be succeed to find out the "life forms" on the different planets or planet beyond our earth. !

The Star trek Enterprise was not designed to land on planets nor moons, so it is possible that ET arrived near Earth without a functioning shuttle craft. The beam down technology may never be developed, even by very advanced technology.
Several interseller craft without a functioning shuttle is of course very improbable.
I agree however that ET may be much more advanced in some respects, such as intersteller travel, but less advanced than humans at present in many other areas. Neil

That's an interesting thought, suntrack.

__________________
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek
"Carl Sagan sent a message to ET,
Neil Armstrong walked in the Sea of Tranquility
Steve Squyers built Spirit and Opportunity
Dan Haylen upchucked in zero gravity." -Brent Simon, The Space Camp Song

The aliens already came here. The found a world, with a large moon with vast oceans of water. The set up a colony and existed for a million years before eventually becoming extinct. That was 4 billion years ago and bacteria, which hitched a ride with them, thrived here on this alien world. There is no evidence of their existence. The earth has weathered their mighty pyramids to nothing. However, they did manage to have a refueling base on the Moon, in which the Chinese orbiter will find in a few weeks.

__________________
Fields of Space

LOGIC, n.
The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.

In the Year 2525.

"One small step for (a) man. One giant leap for mankind".

If an astronaut doesn't need good grammar, niether does you.

Host of Seraphim

The dissapeared in one night of volcanoes and earthquakes, sinking beneath the sea. Their pyramids may have eroded, but somewhere in the mantle--long subducted--floats their indestructable ship. Someday in the far off future of 2012 it will be thrown out of a volcanoe much like the one that destroyed their civilization. We, the descendant of the scum of their ship, will gape in awe at the name...ATLANTIS on the side...

Sorry, couldn't resist.

So twice I've typed a real answer in as an edit, and twice I've been denied. It was a decent answer to. I'm not going to retype it a third time AGAIN, so just google protobionts. That will be similar to what I was going to say, but not as succint. I had all the important parts pulled out and arranged, but I trust your critical reading skills.

If you don't understand, or don't google, a protobiont is essentially an aggregation of organic molecules that are assembled abiotically and can do so without help under labratory conditions. They can reproduce (albeit imperfectly), and can maintain an environment inside themselves that is different from the outside conditions. There are other things that suggest they may be precursors to life as we know it--look up your local biology textbook.

Anyway, twice is enough and I don't want to type out a third time, so take it or leave it, this is the extent of what I think we will find out there. Or something like it.

__________________
None to speak of

I think there is a good chance that within 100 years we can show there is life on other planets.

telescopic imaging will be very advanced by that time and we should have some massive scopes in space by then. Considering the technological advancements we have made with optical imaging it seems to be logical that we may actually be able to see them before we hear them.

I would also assume that any tech civilisation which has a few thousand years evolution on us could be looking at us right now. So if they were say 100 ly away they would be watching earth in 1907 at the moment. Theortectially it is possible they could be looking at images of the objects, people and cities.

They would know we are developing. Even a tech civ 300 light years away may have enough optical maginification power to see what we were doing before the industrial revolution.

I dont understand why we think communication necessarily happens through radio waves. It seems a rather immature assumption.

I really think optics will become our format of exploring the universe and getting close ups of planets. If we can read their road signs we can learn just as much as through two-way communication. We just need telescopes that are hundreds if not thousands of times more powerful than we have today.

I am not aware of any physical limitations to optical advancement as long as we are prepared to build massice space telescopes. Theoretically we could build one the size of a planet in space. That would enable us to see a hell of alot and with very high degree of detail.

let's DO IT!

__________________
I want to live on mars!

Here, here!

__________________
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek
"Carl Sagan sent a message to ET,
Neil Armstrong walked in the Sea of Tranquility
Steve Squyers built Spirit and Opportunity
Dan Haylen upchucked in zero gravity." -Brent Simon, The Space Camp Song

As has been said many times on the SETI threads, we don't. We "assume" no such thing. As with looking for exoplanets, we use the methods we have at the time, and radiotelescopes can gather more data than optical ones at present.

There's no reason not to use both, along with IR, UV, and everything else we can think of. But right now, radio is the easiest to look for.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

I once (in a joking fashion) suggested that the Teton Bolide was an Von Neumann probe doing a hard aerobrake, as it stayed in atmo 1500 km and was captured (or at least had its orbit adjusted) by Earth's gravity.

If I designed a craft to visit an extrasolar planet, I'd have the NSWR bus do a hard burn, release the payload, have it do the M2P2 as the Bus few by, and then dump remaining speed on multiple aerobrake maneuvers as is done for mars orbiters--but in a more severe fashion over many passes over several years and several orbits.

Then one last aerobrake--and pop the chute. Radio results to the bus, and that relay those back to Earth with laser light.

Flight time in centuries if not millenia.

A similar alien probe--using the same method--would look a lot like Teton.

I believe the chances are remote due to the rapidity of technological change. We've been developing for several billion years. Yet 200 years ago we communicated via pony express. Not a lot of dispertion on those ponies... 100 years ago we were tapping code through strung cable. Not a lot of dispertion there, either.

Only in the last 70 years have we really been broadcasting in the EM spectrum. But we've gone from 1000 kilocycles to GHz. In a 100 years
we'll be using some subpoint energy or neutrinos.

That means that during our tenure here, we'll have been detectable by a comarably adapting race for just 1/20,000,000th of our time here.

That's not even a blip on a radar screen, and the chance of two such races both being in parallel progress at the right time is incredibly low. Chance are, by the time the signals are transmitted and received, the first race will have progressed to FTL travel, will have sped ahead of their original signals, and the receiving race will never receive the signal.

I believe that if we haven't received any signals yet, then we're the race that'll beat our own signals and be the ones to go to them.

Otherwise, the others would already be here.

__________________
I am Mugs, of the Alien clan of Usa, Nordamerica, a Terran, of Sol.

Perception isn't reality. It's merely an abstraction thereof, and quite often not a very good one at that.

I am human. Fully human.