Prospects for Intelligent Life in the Universe | Geoff Marcy
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- Опубліковано 1 лип 2015
- Geoff Marcy (UC Berkeley)
KITP
Feb 28, 2015
'Prospects for Intelligent Life in the Universe' lecture given by Geoff Marcy at the KITP Teachers' Conference: Worlds Suited for Biology: The Search for Life in the Universe.
Lecture slides here: online.kitp.ucsb.edu/online/ev...
Coordinator: Geoff Marcy
Video can also be found here: online.kitp.ucsb.edu
I love these videos. Thanks for posting.
43:25 I think I have an answer to the question "Is intelligence special, or is it just another adaptation?" This guy's example was elephant ear wax and how elephants might regard ear wax as the pinnacle of biological advancement, and so maybe humans are just doing the same thing when we shape our criteria for advanced civilizations around "intelligence." The one problem with that analogy is that ear wax, and every other adaptation in nature, will never help Earth life proliferate beyond this planet. Without interplanetary germination, Earth life can only last as long as this rock we stand on, but intelligence has allowed us to reach out and expand our arena for survival to the galactic scale. I think it is inarguable that that is fundamentally different and has dramatic and optimistic survival implications for all life on Earth, not just humans. The emergence of intelligence is analogous to Earth going through "puberty" and getting ready to spread its seeds. That's just my personal opinion.
half empty rooms, at lectures like this. just tell me what the majority people care about in life, watching reality tv, and other brainless activites, and going around being hateful, and not feeling furfilled
year 2000 those poor bastards trying to use their cats to be furfilled
Indeed
I love to watch this lectures on my bed 🛏 in late night hours, hope science 🔬 find extraterrestrial 👽 life before I die.
If history is any guide, I think it's clear that the length of time civilizations broadcast radio signals is very, very short indeed. Surviving even 100 years after the development of radio signals was extremely unlikely even for our own species (we're still more than a decade away from making it 100 years and the fact that we haven´t destroyed civilization as of yet is simply astounding, given how many close calls we've had). Add to that the problem of limited resources coupled with exponential growth, and it becomes quite clear that civilizations have a pretty short expiration date.
An excellent presentation. I hope we are not alone.
kus0mak I hope we are not alone in watching this video. 600 views among a planet of intelligent life.
vzuzukin my reply above was meant to be here. Oops!
kus0mak why?
"Bad Kevin Costner film."
Cmon! We all loved Waterworld! Its one of those guilty pleasure movies.
I support this kind of research...for the future...
This was in february 2015 but I heard recently some rich russian gave money for SETI.
I hope it went to people like Geoff Marcy
You might be giving lectures in small half empty rooms now but history will prove you right, or at least as someone who thought ahead
Well, I guess they found that guy with the 4 million or so a year when Yuri gave 100 million for a 10 year project.
Good presentation as always by Geoff.
Great presentation by Geoff. I'm not so sure about his comments on the Drake equation. He said there 40 billion planets in the habitable zone. But he seems to define that zone as the place where water will be in liquid form. Isn't there a lot more to be considered? Things like an atmosphere, an ozone layer protecting us from ultraviolet rays, a quiet place in the galaxy, a large moon relative to the planet, a Jupiter size planet acting as a garbage collector. All of these things make a planet habitable. So, the 40 billion decreases to less than 1. So lets say there is 1 planet in the habitable zone and then apply the last three terms of the
Drake equation. Conclusion: We are alone in the galaxy and probably even in the universe.
I want to add one thing, if I am correct are we a carbon based life form. If these environments {systems} that are different may also be by the stars themselves, even the raduation of each star also matters here.
we do not send out signals ... so, why would they?
Nothing wrong with the math about "habitable" planets, but three Problems: Distance, distance and distance.
The other side of our galaxy is 140 000 light-years away. Lets do some science-fiction: we made it, to communicate 100 times the speed of light. Our "Hello!" need still 1400 years, for the answer we have to wait another 1400 years.(Provided, they got the same sci-fi skills.)
The real important question remains: How long did manhood survive? Long enough for a Contact? I'm afraid, so called
"intelligent" life is doomed; simply by ability killing themselves in a apocalyptic war or - little bit slower- eat the planet to death
by ignoring nature.
Greetings from Krautland!
It seems certain there would be solar systems- well, at least one, in which there are 2 habitable planets with intelligent life on them circling a single star.
It is sad, but with the amount of videos on UA-cam, it is understandable. I share, via email, vids I like. This was one of them.
Easy to say 200billion stars but many are in a toxic zone others are in a area were there is not enough metalicity the region were it is safer..there are most areas to much dust has volatile areas are area is clear crystal..how many sun like stars in a region like area are there a few million so life is rare in a galaxy because of such reasons..no doubt there will be life in are galaxy lucky to have 100 planets with intelligent beings
Are there 200 billion stars in our galaxy or 400 billions?
I keep reading or hearing one or the other
+Skg There are 299,792,458,123 stars, give or take 100 billion.
+Skg Faster has a good number for you. It's in the range of 2 billion.
314,159,265
Earth rotates like a lawn sprinkler. No distant star system will be able to know more than that the radio has an artificial origin. They can not watch “I love Lucy”
New estimates say there are two trillion galaxy's in the observable universe could be much larger than that. Humans are everywhere thousands of them per galaxy the laws of physics are just right for life could the laws have come about chance and arise when the universe is created. Geoff macey is there a god?
I don't agree about evolution not favouring intelligence, particularly with dinosaurs as the evidence: birds are dinosaurs, and they were in terms of brain size to body ratio smarter than their giant cousins. That higher brain size to body ratio, along with a smaller body that allowed for faster reproduction and an ability to survive on scarce resources, allowed birds, alone among the dinosaurs it seems, to survive the KPg event.
an advanced civilization would communicate using neutrinos ... no interference.
Human is not the only one species of intelligent life on earth. Ant is also able to organize their society and make farming. These two species are the most powerful species on earth. For instance, cockroach is a tough survivor rather than ant, but ant can learn from experiences. Cockroach can not learn. Hence ant will be more formidable insect than cockroach to exterminate. One planet has evolved several species of intelligent life. I believe that is a evidence of the pressure of evolution. I don't believe intelligent life is rare. The difference between human and ant is that human can be organized by different gene. Ant can not. The nature of the organization consist of different gene may be the answer to the Fermi Paradox.
What's this I head about harassment? Total BS from what I read. Keep on opening doors Geoff and don't let the haters get you down
We cannot understand universe with our 5 senses. Maybe they have different senses than us.
Maybe they have different thinking than us.
And if they have to use science to get here than probably they are so advanced that they destroyed themselves in process.
As the more civilization advances the nearer it comes to its decline.
Or maybe they are lagging us in technology, so even if they are there, we will never know.
All in all this earth is so special and we are destroying it , and trying to find microbes on other planets.
Intelligent life = one in one billion species on earth so intelligent life must be one in one billion inhabited planets at best? While we don't know the true odds we do know that argument is flawed! It assumes other inhabited planets only develop one species each.
lies lies lies lies lies lies lies......
fool, fool, fool, fool, fool.....
@@DyingToLive12 intelligent life and toy cars
poor geoff , he was probably scared to look at a chick after what they say what he did
the universe is a triangle, inside earth
Krauss tyson and kaku is better