At Least 100 Billion Planets

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Profile Clyde Special Project $75 donor
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Message 1201413 - Posted: 1 Mar 2012, 17:48:17 UTC - in response to Message 1201409.  
Last modified: 1 Mar 2012, 17:51:17 UTC

The Alpha Centauri star group are 4.4 light years away. Assuming that any signal we observe won't travel at more than the speed of light, somewhere between thousands and millions seems a reasonable guess to me.


did they even check those Alpha Centauri star group for exoplanets ? since EVERY star are 99% sure to have planets around ?


The search for planets is a very important.

But finding 1(place the number zero's in here) planets/exoplanets, will only matter (for the purpose of SETI) regarding habitable planets.
Those who cannot remember the past are condemned to repeat it.
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Message 1201419 - Posted: 1 Mar 2012, 18:12:53 UTC
Last modified: 1 Mar 2012, 18:17:29 UTC

at begining of finding exoplanets, i understand it s important to find some, wherever they are.

but after we have found 1000, 10 000, 100 000 of them, finding every exoplanets near us, in our star group, is way more important.

i know we cant get anywhere, not even able to send people to mars lol, our nearest one ^^
but finding clones of earth at 850 000 ly from earth give us nothing :) we will never able to sent people there even within the 30th century ^^^

but i think it s more important to get some at 4.4 or inside 10 ly.
in the future, 10 ly will be at hands reach, but 70 000 ly or 900 000 ly wont still.

i believe that every star has planets, but they arent necessairly transiting in front but may make revolutions at 90 degres, but still always have planets.
so this is why i was wondering about centauri
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Profile Chris S Crowdfunding Project Donor*Special Project $75 donor
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Message 1201422 - Posted: 1 Mar 2012, 18:21:45 UTC

so this is why i was wondering about centauri


They have looked but found nothing so far.

Centauri

The discovery of planets orbiting other star systems, including similar binary systems (Gamma Cephei), raises the possibility that planets may exist in the Alpha Centauri system. Such planets could orbit Alpha Centauri A or Alpha Centauri B individually, or be on large orbits around the binary Alpha Centauri AB. Since both the principal stars are fairly similar to the Sun (for example, in age and metallicity), astronomers have been especially interested in making detailed searches for planets in the Alpha Centauri system. Several established planet-hunting teams have used various radial velocity or star transit methods in their searches around these two bright stars. All the observational studies have so far failed to find any evidence for brown dwarfs or gas giant planets.
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Message 1201425 - Posted: 1 Mar 2012, 18:31:50 UTC - in response to Message 1201422.  
Last modified: 1 Mar 2012, 18:33:21 UTC


Centauri

The discovery of planets orbiting other star systems, including similar binary systems (Gamma Cephei), raises the possibility that planets may exist in the Alpha Centauri system. Such planets could orbit Alpha Centauri A or Alpha Centauri B individually, or be on large orbits around the binary Alpha Centauri AB. Since both the principal stars are fairly similar to the Sun (for example, in age and metallicity), astronomers have been especially interested in making detailed searches for planets in the Alpha Centauri system. Several established planet-hunting teams have used various radial velocity or star transit methods in their searches around these two bright stars. All the observational studies have so far failed to find any evidence for brown dwarfs or gas giant planets.


thanks you for the quote :)
it s sure there are planets there too... too bad they arent transiting in front /cry.

i guess the only way to find is with tons of pictures and checking such dim dots making circles around /cry
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Message 1201458 - Posted: 1 Mar 2012, 20:17:30 UTC - in response to Message 1201248.  
Last modified: 1 Mar 2012, 20:18:50 UTC

If the Milky way was swimming with intelligent life we would surely have solid proof of such by now.


That may not necessarily be true. We don't know how long civilizations last or how much time there is between them. We also don't know how long it takes for a civilization to become spacefaring. They may be at our stage of development, more developed but still with no means of traveling vast distances, or they may be cavemen.

There may have been advanced civilizations in the past as well, even on Earth. Earth and the universe is very old.

Space so incredibly vast that contacting other alien civilizations within any decent amount of time just isn't feasible. Even light barely crawls through space since it moves so slow. This is the main reason why I think we haven't really heard anything. Everyone is WAY out of reach.


Thats my point when I say about another race blowing itself up. Its a miracle we haven't blown ourselves up. The chances of other races doing so is equally as high perhaps moreso than us even. For that reason I think life on other worlds (regardless of if they are habitable to us or not) is extremely high, but actual intelligent life much much rarer. Sadly I'll never be alive to know the exact number of other intelligent life in our galaxy (by intelligent I mean those of at least equal intellect to ours) but to say other intelligent civillisations is between 10 - 100 in our galaxy makes sence to me. I would be strongly inclined to think spacefaring civillisations certainly no more than 10. To get that kind of knowledge would certainly take a more mature civillisation to ne at least 10,000 years more advanced than us. I can't remember who else said what so I'll generalise, superfast space travel can't be ruled out. If we survive even another 1000 years I'd think humans would be capable of extending reach to 20 lightyears, perhaps more. It all depends on if wormholes are proven to be real, if we can manipulate them etc. Even if wormholes don't exist natural development in technology will allow us to travel large distances. The latest examples that spring to mind (I forget its exact name) is some kind of like 3rd generation ion drive that could take us to out nearest star in like 45-35 years, something like that I think it is. Looking at the more immediate future I know theres some kind of engine being worked on that can get spacecraft to Mars in 5 weeks. Thats a incredible leap forward of the current fastest spacecraft to go to Mars which took 6 months!
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Message 1206216 - Posted: 15 Mar 2012, 17:55:12 UTC

Told you ET has been here before ....

ET?
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Message 1224805 - Posted: 29 Apr 2012, 7:45:32 UTC

I find the Fermi paradox quite haunting


where are they?


Maybe they are only here, scientifically speaking this is all we have to go on.


What if our planet is it, the only planet with life or what we call life on it.


We are all guessing so many things when we postulate other civilisations.


We might be lucky to find a planet with bacteria with primitive ancestor of RNA, but that might be it.


There could be other scenarios as well, what if a life giving planet or other life giving planets existed in this part of the galaxy before... and we are products from that life giving planet...the left over bits of primitive bacteria.

The planet and solar system may have been primed by this earlier planet..or planets.

That could be grim for the possibility of life else where..this event had a whole lot more time to occur..making the odds that is even more difficult to produce life even greater.





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Message 1224822 - Posted: 29 Apr 2012, 9:05:49 UTC - in response to Message 1201458.  

There is a paucity of stars out to 20 light years. Currently no engine that could take us there due to the mass of fuel required.
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Message 1227412 - Posted: 4 May 2012, 21:47:53 UTC

Given that certain things,unique things,have occured here,then the prospect for life elsewhere is not as high as i believe some like to think,other planets would have to have a magnetic field(so we didnt cook),perhaps a large moon as ours,(to hoover up the odd life threatening astroid etc),and somehow have just the right "goldilocks " conditions.What i dont dispute however,is there must be life elsewhere,..the mere fact WE are here proves its possible..in fact there must be...as i said,the fact we are here makes it more logical than ilogical...its happened once......
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Message boards : SETI@home Science : At Least 100 Billion Planets


 
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