Wednesday, September 2, 2015   |   4,873 users online
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos  ·  Chat
Find: in

How many alien civilizations are there ?


Posted on Thursday, 6 December, 2012 | Comment icon 184 comments


Image credit: Hajor, Wikimedia

 
How likely is it that we will find an advanced alien civilization within our own Milky Way galaxy ?

In 1961 astronomer Frank Drake proposed a famous equation designed to calculate the number of detectable alien civilizations within our own galaxy. The calculation required numerous factors, many of which were controversial or unobtainable such as the percentage of alien civilizations that have developed electromagnetic radiation emitting technologies. The results of the equation therefore could be considered speculative at best.

In 2010 however Italian astronomer Claudio Maccone developed a new version of the equation known as the SDE ( Statistical Drake Equation ). This revision is a little more robust than the original, filling in the blanks using the Central Limit Theorem. According to his findings there is a 75% chance of finding an alien civilization between 1,361 and 3,979 light-years from Earth.

"Looking to the Drake equation factors, it is obvious that none can be precisely determined by modern science."

  View: Full article |  Source: Phys.org

  Discuss: View comments (184)

   


 
Recent comments on this story
Comment icon #175 Posted by psyche101 on 14 January, 2013, 8:37
Drugs are bad Mkay. What makes you feel telepathy is an option? As far as I know, it is entirely a science fiction concept with no basis in reality whatsoever. Plenty of hippies to argue otherwise I realise that, but when it comes down to hard evidence, no amount of duress torture, happiness or promise has managed to make such a sense surface, nor does it exist in nature that we are aware of. Telepathy has about as much fact behind it as does the Voyages of the USS Enterprise - great story, but it's exactly that, a story. And I take it your are assuming that telepathy does not use s... [More]
Comment icon #176 Posted by psyche101 on 14 January, 2013, 9:25
Gidday Mate It warms the heart to hear you speak of her. Inspiring to hear such pure goodness still exists out there. Really well thanks She is just glowing, had just been down to the local shopping centre and had her picky taken with her little boy, and a python wrapped over her shoulders! I sure was not expecting that, but the best visits are the unannounced ones, thanks for the inspiration mate. Ahh, you kingdom for a fibre! Ever read the BOFH? Interesting It tales Simon would have a suggestion on how to "acquire" fibre I am sure. Cat 5 is limited to 75 bps... [More]
Comment icon #177 Posted by psyche101 on 14 January, 2013, 9:36
Gidday Mate I know where you are coming from, my contributions have been rather sporadic of late as well, but always good to see you, and hope the new year see's you in well. I have rather hit the ground running myself. I am also a glutton for punishment it seems . Indeed, it feels good to be able to offer the man praise, in so many passionate debates we became quite heated, yet he always held his tongue and maintained the mark of a gentleman. Todays nonsense is nothing short of childish by comparison to the level Sky pushed a debate to. He made a debate interesting, todays debat... [More]
Comment icon #178 Posted by quillius on 14 January, 2013, 9:37
Hey Psyche, Happy New Year mate!! hope you all had a lovely time. (yes me and the Quilliuses all did, many thanks ) with regards to Sky not returning, although I see your point I still think it would be great to have McG and Sky on the same thread arguing the cases......dont you think?
Comment icon #179 Posted by psyche101 on 14 January, 2013, 10:11
Cheers mate Up and down, lost a mate over the break, that was sad, but he was a fighter, and did well, and inspiration to us all right to the end. Always good to see the kids in daylight hours too Indeed, I would welcome the old bird back, it just seems sometimes legends can become larger than life, heck, I am singing his praises! I'd hate to see a slip up, or something happen, and the legend lose some status. People are usually remembered for the last bad thing they did, not good, Sky has managed just the opposite, he was not Superman, but a great and passionate debater all the sa... [More]
Comment icon #180 Posted by quillius on 14 January, 2013, 10:31
I am really sorry to hear about your loss Psyche, it certainly keeps perspective in tune and ensures we remember to value the time we have. and yes couldnt agree more about daylight time with the little ones As for the rest of your post I am really flattered and humbled Psyche with all those kind words. Do remember though, the dance required two not one participant.....and I can only wish to have the knowledge you have across so many subjects. I fully agree that our best discussions were indeed head on and shows how well both sides can work with mutual respect in hand. I have spent qu... [More]
Comment icon #181 Posted by Kludge808 on 15 January, 2013, 4:29
Good afternoon. Minor monsoon this AM which took the power out here for some 7 hours. Made going to my psychonanny appointment a bit entertaining since traffic lights weren't functioning at very busy intersections. I don't know that I do anything special. I feel that I'm doing what any parent should, taking care of my little girl. We are close though and always have been. Always a pleasure. I'm going with the idea that said python was well fed and not too excited about making either of them into a meal. :-) Simon is my hero, doncha know. :-) Heck, Cat3 can do 1... [More]
Comment icon #182 Posted by Kludge808 on 15 January, 2013, 4:33
Dammit, I just bought a new one, custom made even! We can't do away with them yet!
Comment icon #183 Posted by Slave2Fate on 15 January, 2013, 4:51
Well I guess there's more than one way to turn heads than just being handsome I suppose... BTW: it's good to see you around the forums again Kludge, I always get a smile or some smarts from your posts...sometimes both.
Comment icon #184 Posted by Kludge808 on 15 January, 2013, 5:01
Well, with my dashing good looks, I don't need to make a fashion statement but I didn't want a plain off-the-rack tin foil helmet either. :-D Thanks. I'll be in and out since I have some projects going on that require my attention but it's all good and I'll be on board as much as possible. Of course, one can never tell where I'll pop up next. Bwaaahahaha ...


Please Login or Register to post a comment.


Other news in this category
Could life spread across space like a virus ?
Posted 8-28-2015 | 9 comments
Astrophysicists are hoping to one day track the spread of life from one star system to another....
 
Ed Mitchell claims ET prevented a nuclear war
Posted 8-15-2015 | 263 comments
Apollo 14 astronaut Edgar Mitchell believes that visitors from space may have prevented armageddon....
 
Expert warns against replying to ET signals
Posted 7-25-2015 | 69 comments
Professor Matthew Bailes has advised against attempting to correspond with an extraterrestrial race....
 
Hawking helps launch major new hunt for ET
Posted 7-20-2015 | 214 comments
A new $100 million endeavor has been launched to look for signs of intelligent extraterrestrial life....
 
Philae comet could be home to alien life
Posted 7-6-2015 | 13 comments
Astrobiologists have suggested that comet 67P may be home to live extraterrestrial micro-organisms....
 
Could human-like aliens be commonplace ?
Posted 7-2-2015 | 194 comments
Some scientists believe that life is likely to develop elsewhere in much the same way as it has on Earth....
 
'No aliens in Area 51' says NASA head
Posted 6-19-2015 | 122 comments
Charles Bolden made the light-hearted remarks after being questioned by a ten-year-old on Sky News....
 
Will first contact be with alien machines ?
Posted 6-7-2015 | 52 comments
Astronomer royal Martin Rees believes that we are likely to encounter machine-based extraterrestrials....
 
NASA steps up the search for alien life
Posted 4-24-2015 | 6 comments
The space agency has formed a new coalition of scientists from a wide range of different fields....
 
NASA predicts alien life discovery soon
Posted 4-8-2015 | 65 comments
Chief scientist Ellen Stofan stated that we are likely to find evidence of alien life within 20 years....
 
How large is an alien life form likely to be?
Posted 4-7-2015 | 443 comments
Cosmologist Fergus Simpson believes that intelligent extraterrestrials would be much larger than we are....
 

 View: More news in this category
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.6 Unexplained-Mysteries.com 2001-2015
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ