It is his ability to reply to any question without ever talking down to people and helping raise up the enthusiasm for the kids. Can you imagine if all Physics teachers were like him? We'd have resolved many of the worlds problems e.g. energy crisis, grand unified theory of everything and so so so much more.
You prolly dont care but does any of you know a method to get back into an Instagram account..? I was stupid forgot my password. I love any help you can give me
@Ayaan Grant Thanks so much for your reply. I found the site thru google and I'm in the hacking process now. Seems to take a while so I will get back to you later with my results.
Brian Cox makes me want to go back to school and get a decent education. Tip: a sentence ends with a full-stop, a question ends with a question mark, not ending a sentence at all means you have to go back to school.:P
@@_charliezard_7218 Why do people have a need to be rude and attack the person, rather than their comment? Have you ever heard the phrase "slander is the tool of the loser"? Discuss the case, don't attack a person, it just makes you seem like the rude one.
+Sergio you have watched too much idiot box.... this pretty boy, cant give you any evidence only theories, maybes etc.... and he is in for a very rude awakening as are many others.. There is history, archology, real science not this pretty boy tv stuff..... and bottom line,,,, you cant make something out of nothing.... if you could these great scientists instead of talking would be making new planets to live on .... but no all they do is talk and theorise and have no proof... SAD that people have stopped using their own brain...
Janina Simons : you are way to harsh on the boy! Brian has legit diploma in physics and he is very good for simplification of concepts for the profanes like me.
Janina Simons What’s this “rude awakening” then fucktard? By the way, your use of punctuation is unsettling, please learn to type English properly before criticising someone.
As always, Professor Brian Cox continues to make science totally accessible to the public, from school children through to Adults with any level of knowledge. For me it's his enthusiasm about science in general that is so captivating and ensures that you really want to listen to whatever he is saying when he talks.
As people here might have already experienced, listening to Brian Cox talk and explain things is a great pleasure, he’s so brilliant at explaining things and giving so much inspiration. I just bought his book called “Why does E=mc^2?” And oh my god, it’s so good. Reading him is just as good, might even be better. I definitely recommend that book to anyone interested in relativity, it’s amazing...
One thing I love about Brian is there is no dumb question to him, and that he constantly acknowledges how great these questions are! Regardless if he's answered the question many times, his answer always feels personable because of his acknowledgments!
I LOVE these questionaires! They really put things into perspective. Thank you Brian and Alan for being so clear, and thank you to everybody who makes these things happen ♥ :) Hope I can be part of it soon!
Every time I watch Prof Brain's videos, I learn 100 things and / or better my understanding of something complicated!! Thanks for all the knowledge in your style!
Brian Cox you are awesome 'i love your passion and excitement for the universe that we live in! I also appreciate your simple explanations about the things we do and don't know which makes it easier for people like me to understand! Thank you for all your hard work and you are and always will be a legend 👌💪👍
As an amateur biologist, I love his appreciation for my field. We're both working towards the same goal: understanding. He has such an eloquent way of speaking about all the sciences... I'm such a fan almost immediately. I'm glad I found Brian Cox while he was still alive, lol. I found Hitchens years after he passed and was beyond sad. Two totally different people, but the sentiment is the same.
The way he breaks the numbers down to give us a better concept of how big theese numbers are. Brilliant. Have learned so much waiting for him to tell us where the fountain of youth he found is.
I really admire Brian Cox's dedication, and fun way of answering questions put to him by our budding astrophysicist and scientists! Inquire based education favours and inspires our students.
I love how he can speak proper England. No "like", "you know", I'll just go ahead and", "umm...um, like, ya know, really", "goin" instead of "going", and all the other moronic speech affectations one hears today, even from commentators. Illiteracy is rampant. He speaks with confidence, clarity and enthusiasm. I'd still be going to school if I had professors like him.
"It is inconceivable that there will not be life and, I think, civilizations out there amongst the stars.." God I bloody LOVE this Universe! It's so incredible! Always been fascinated by it ever since I was young. I often wondered why some stars seemed to twinkle between blue, red and white..
Refraction splits white light into discrete colours, as in a prism. And some sources of refraction vary with time, which is what causes twinkling. so the zones of colour might sometimes sweep past given observation positions like the beams of a lighthouse?
He makes it sound so easy and understandable. What can be explained he can encapsulate it in a few sentences, what is still a mystery is explained in a way that is almost like peeling an onion until the next layer cannot be removed until the science to remove that layer and get closer to the answer is complete
And, thank you, Brian! I won a bet because of you. You made a statement of the expanding universe. I was screaming "The Bubble Theory" at the screen. Friends in the room said to me what do you know you only have a high school diploma! Five minutes down the pike, you said bubble, not once, but thrice!!! Two of these people have doctorates in the sciences. I said to them " I hope you can get your money back on those degrees that you spent a fortune on!" Then I collected my winnings. If I have the good fortune to go to Manchester England ( across the Atlantic Sea) I wanna take you out to dinner. Thank you again, Eddie in Quincy Massachusetts.
If you do get to Manchester, you'll find they dislike smart arses pretty much the same as everyone else. BTW: The Atlantic is an Ocean. BTW2: Cox doesn't live in Manchester, he and his family live in London. He can afford his own dinner.
@@johnnyyuma9326 LOL...what the fuck isn't, this is still hypothesis and theories to unify General relativity and Quantum Mechanics, because the damn math falls apart. How about this, when you get YOUR PhD I will then even admit you have a right into this conversation and take someone else to task with your big words that really just mean, you do NOT understand what you are talking about. This is my field, has been for 25 years. You do not even seem to have a GED level of true understanding in Physics going by your BS insults to others on this page. When your brain in made of glass, you shouldn't throw stones. It just shows you for a idiot, in need of more education. Have a great day.
Way to go guy, ya keep studying black holes as you major interest. When you just said there is no possible way to study them " no information ever comes out and we cant through him that far" but we can whis we could
I would ask which day it is(not "what" day..) and Brian would reply, as per usual, that it is a good question. Also, don't make a sentence into 3 lines of text.
Brian cox and niel degrasse tyson are the only scientists to have ever got me interested In science and space... forever watching them lately...the geniuses in our generation alongside elon musk
Well that's what he was saying, since it is so unimaginable dense, the way that it warps space-time itself makes it so that, what we see as the circumference from our position may be skewed because of the warps of space time, the way light bends around it, ect. So we measure the circumference as X, but in reality the space-time that is warped on the inside of the blackhole could be Y. We simply don't know.
The fact that developing a space-ship-civilization took earth a third of the age of the universe... such a simple perspective yet widely overseen. Theres not much space on the timeline of existens when intelligent life could have developed. We are probably the first!
I wouldn't be surprised if black holes are simply a distance of size, between two adjacent regions. The event horizon is like looking in a microscope, the event horizon of the lens. Light doesn't escape because the particles of Light are ripped apart and form smaller particles INSIDE the region, enable the region to contain entire galaxies in miniaturize form. I also wouldn't be surprised if we find that our own universe has a similar feature, but from the inside looking outward, and we can't see it due to "Its" size. Bubbles within Bubbles.
Nie znam niestety języka angielskiego. Chciałam tylko powiedzieć że przeczytalam Jego dwie książki które zostały wydane w Polsce. Bardzo gorąco Go pozdrawiam. Od dziecka interesowałam się Kosmosem. ALE niestety nie skończyłam studiów z astronomii. Ale Bardzo mnie interesuje astronomia . Pozdrawiam Briana Coxa i czekam na nowe wykłady.
My theory is there is no centre of a black hole. I think it just goes in and out of itself within itself. I think it radiates like Brian Cox says. It shrinks then expands what it holds within it's self.
Very interesting I love how Brian makes physics easy to understand. Also I'm glad he uses simple explanations because I kept getting distracted by his arms and I couldn't focus on his words🤡🤡
Prof BRIAN COX ON LIFE FALSIFIES THE BIG BANG 1. When speaking of the chance origin of life Prof Brian Cox said the following 2. _"All it takes is a system far from equilibrium with a flow of energy and a spark"_ 3. What he did not say was what he actually meant by _"far from equilibrium"_ 4. What he meant by "spark" is a random improbable event favouring a molecular replicator 5. But _"far from equilibrium"_ in thermodynamics means in a state of *ORDER* 6. That is from one state of *thermodynamic order* some energy may be directed to create more *order* 7. Directed energy in thermodynamics is called *work* but its creation is inefficient producing heat 8. Therefore the former state of order is always greater than the latter state of order it may create 9. That means the work which created the former state of order must have come from a higher state of order still 10. Such a regression must stop at an original state of maximum order consistent with a creation and the second law 11. The Big Bang creates a state of *HIGH DISORDER* as indicated by the smoothness of the CMBR (equilibrium) 12. The Big Bang is falsified as a violation of the second law of thermodynamics. Q.E.D.
The observable universe is approx. 13.8 billion years in every direction? That would point toward the universe being much larger than we can see and 13.8 years isn't the 'birth' of everything, but perhaps maybe just the beginning of us.
I think Arthur .c. Clarke said that the centre of Jupiter may be a massive diamond? .I like it when Brian and Jim get together on UA-cam . With the moon being nearer to us than Mars wouldn't it be better to try and Colinnise the moon.😊
It is his ability to reply to any question without ever talking down to people and helping raise up the enthusiasm for the kids. Can you imagine if all Physics teachers were like him? We'd have resolved many of the worlds problems e.g. energy crisis, grand unified theory of everything and so so so much more.
I had a great physics teacher at South Bromsgrove High School, Doc Evans, and a total twat of a physics teacher, Mr Peters!
Totally agree.👍
You prolly dont care but does any of you know a method to get back into an Instagram account..?
I was stupid forgot my password. I love any help you can give me
@Andre Clay instablaster :)
@Ayaan Grant Thanks so much for your reply. I found the site thru google and I'm in the hacking process now.
Seems to take a while so I will get back to you later with my results.
Brian Cox literally makes me want to go back to school and get a decent education
Lol, indoctrination you mean.
I think if you start writing your own imaginations you will do much better.
Andrej Pejcic you are the lowest form of life
Brian Cox makes me want to go back to school and get a decent education.
Tip: a sentence ends with a full-stop, a question ends with a question mark, not ending a sentence at all means you have to go back to school.:P
@@_charliezard_7218 Why do people have a need to be rude and attack the person, rather than their comment?
Have you ever heard the phrase "slander is the tool of the loser"?
Discuss the case, don't attack a person, it just makes you seem like the rude one.
Brian's charm is probably even more than his considerable knowledge. He's a joy to listen to and learn from.
@Pil Gor "Kath David" seems to have an issue with science. They have been posting toxic comments all over this video.
I love how Brian expresses and explains the ideas
+Sergio you have watched too much idiot box.... this pretty boy, cant give you any evidence only theories, maybes etc.... and he is in for a very rude awakening as are many others..
There is history, archology, real science not this pretty boy tv stuff..... and bottom line,,,, you cant make something out of nothing.... if you could these great scientists instead of talking would be making new planets to live on .... but no all they do is talk and theorise and have no proof... SAD that people have stopped using their own brain...
Janina Simons Hey Janina, just wondering what makes you think he should be able to create new planets?
Edit: Name typo
@@TheFatSteez What an interesting comment, but maybe it was for James not for me.....better repost for James :)
Janina Simons : you are way to harsh on the boy! Brian has legit diploma in physics and he is very good for simplification of concepts for the profanes like me.
Janina Simons What’s this “rude awakening” then fucktard? By the way, your use of punctuation is unsettling, please learn to type English properly before criticising someone.
As always, Professor Brian Cox continues to make science totally accessible to the public, from school children through to Adults with any level of knowledge. For me it's his enthusiasm about science in general that is so captivating and ensures that you really want to listen to whatever he is saying when he talks.
Brian is so enthusiasts about his interests and his oratory abilities are fun to listen to because of it.
Great science communicator.
He makes science so interesting! What a magnificent teacher. I love him.
As people here might have already experienced, listening to Brian Cox talk and explain things is a great pleasure, he’s so brilliant at explaining things and giving so much inspiration.
I just bought his book called “Why does E=mc^2?” And oh my god, it’s so good. Reading him is just as good, might even be better. I definitely recommend that book to anyone interested in relativity, it’s amazing...
One thing I love about Brian is there is no dumb question to him, and that he constantly acknowledges how great these questions are! Regardless if he's answered the question many times, his answer always feels personable because of his acknowledgments!
Brian's character and his attitude to physics is what keeping the child in you alive looks like. What an inspiration.
Such a great lad! Funny to notice that even adults enjoy the answers to questions asked by children. You gotta love science!
🖒🖒🖒🖒🖒
I LOVE these questionaires! They really put things into perspective. Thank you Brian and Alan for being so clear, and thank you to everybody who makes these things happen ♥ :) Hope I can be part of it soon!
Every time I watch Prof Brain's videos, I learn 100 things and / or better my understanding of something complicated!! Thanks for all the knowledge in your style!
Great questions. Good to see science is alive and well in australian schools
Never get bored listening to brian cox
I love Brian's enthusiasm. It makes me a lot more excited to learn things
Brian Cox you are awesome 'i love your passion and excitement for the universe that we live in! I also appreciate your simple explanations about the things we do and don't know which makes it easier for people like me to understand! Thank you for all your hard work and you are and always will be a legend 👌💪👍
So in about 5 minutes Cox managed to teach me stuff that schools have tried to teach me for years.
The best teachers can summarise an answer
I love how he encourages and makes the young generation interested in science by telling them they could find out themselves if they study.
Rocking the Bladerunner shirt :D
Question two was absolutely fantastic. I love kids for the brilliant original questions they ask!!
As an amateur biologist, I love his appreciation for my field. We're both working towards the same goal: understanding. He has such an eloquent way of speaking about all the sciences... I'm such a fan almost immediately. I'm glad I found Brian Cox while he was still alive, lol. I found Hitchens years after he passed and was beyond sad. Two totally different people, but the sentiment is the same.
One of the greatest teachers.
The way he breaks the numbers down to give us a better concept of how big theese numbers are. Brilliant. Have learned so much waiting for him to tell us where the fountain of youth he found is.
Awesome show Brian & Team. My best wishes to all Aussie students and amateur astronomers
This man Brian never seems to age what scientific secret has he got?
That's true... he looks completely ageless, although his hair is about starting to get grey.
This man, Brian, never seems to age.
What scientific secret has he got?*
It read like shit so I had to fix it.
@@OriginalPuro You still understood what they meant
"Monkey" adrenal organs. Get with the program: you got UA-cam too fhs (for heaven's sake.)
I geatly admire Professor Brian Cox. He is the Isac Newton of our times!
I really admire Brian Cox's dedication, and fun way of answering questions put to him by our budding astrophysicist and scientists! Inquire based education favours and inspires our students.
that was a very grand production very educational very interesting we would very much like to see more videos like this
I love how he can speak proper England. No "like", "you know", I'll just go ahead and", "umm...um, like, ya know, really", "goin" instead of "going", and all the other moronic speech affectations one hears today, even from commentators. Illiteracy is rampant. He speaks with confidence, clarity and enthusiasm. I'd still be going to school if I had professors like him.
Well said, mate. Wish I knew more people like you.
You nailed it Brian! (one of my favorites)
"It is inconceivable that there will not be life and, I think, civilizations out there amongst the stars.." God I bloody LOVE this Universe! It's so incredible! Always been fascinated by it ever since I was young. I often wondered why some stars seemed to twinkle between blue, red and white..
Refraction splits white light into discrete colours, as in a prism. And some sources of refraction vary with time, which is what causes twinkling. so the zones of colour might sometimes sweep past given observation positions like the beams of a lighthouse?
i could listen to brian cox talk about physics allllllllll day
He makes it sound so easy and understandable. What can be explained he can encapsulate it in a few sentences, what is still a mystery is explained in a way that is almost like peeling an onion until the next layer cannot be removed until the science to remove that layer and get closer to the answer is complete
Thinking in a while loop. - You never end!
The bloke is a genius
Me too!
Lol! Having said that, I am a poor reader.
haha hes nothing but a bellend!! total bullshit! but you just carry on sucking up that shit mate!😂😂
Johnny yuma Fuck off flattard, you aren't funny or clever.
Brian Cox may even have a higher IQ than I have!
Can listen all day x
The questioner's accent is an incredible mix of Aussie and, I think, Northern Irish!
And, thank you, Brian! I won a bet because of you. You made a statement of the expanding universe. I was screaming "The Bubble Theory" at the screen. Friends in the room said to me what do you know you only have a high school diploma! Five minutes down the pike, you said bubble, not once, but thrice!!! Two of these people have doctorates in the sciences. I said to them " I hope you can get your money back on those degrees that you spent a fortune on!" Then I collected my winnings. If I have the good fortune to go to Manchester England ( across the Atlantic Sea) I wanna take you out to dinner. Thank you again, Eddie in Quincy Massachusetts.
You won a bet on UN-provable "THEORY'S" Whoever paid up is a much bigger idiot than you, and you are a "FUCKING COMPLETE IDIOT"
Johnny yuma he said the “bubble theory” not “bubble fact”.
If you do get to Manchester, you'll find they dislike smart arses pretty much the same as everyone else.
BTW: The Atlantic is an Ocean.
BTW2: Cox doesn't live in Manchester, he and his family live in London. He can afford his own dinner.
You don't pay a fortune to get a doctorate. In fact the opposite, you are paid to do a doctorate.
@@johnnyyuma9326 LOL...what the fuck isn't, this is still hypothesis and theories to unify General relativity and Quantum Mechanics, because the damn math falls apart. How about this, when you get YOUR PhD I will then even admit you have a right into this conversation and take someone else to task with your big words that really just mean, you do NOT understand what you are talking about. This is my field, has been for 25 years. You do not even seem to have a GED level of true understanding in Physics going by your BS insults to others on this page. When your brain in made of glass, you shouldn't throw stones. It just shows you for a idiot, in need of more education. Have a great day.
Scientists try and disprove theories, this is why their theories become well established facts. Brian, you are a legend and still a rockstar matey
I’ve learned more from Brian cox than I’ve learned from anyone else in my life. This stuff kind of consumes me now.
Can you list 3 things you've learnt please?
I could listen to him all day😊
Amazing prof brian cox...salutations from india
Wish it had danish subtitles, so my son could try to appriciate this knowledge.
MrMunk89 if you know danish you can add the subtitles for him
I feel I'm 6th form with Brian Cox 🐓🌊 really love watching his presence 👍
Children make the best scientists. They wonder at anything and question everything.
It's Great, to be here.
Brian Cox, such a inspirational guy!!
Brian Cox is a god damn treasure to planet earth
I think he should go to Mars
Opened his mind while at and after uni
Such great questions. Well done to all. Well answered, too.
brilliant prof brain
Thoroughly enjoyed this!
Very kool guy with great ideas and explanations. 👍🏻👍🏻👍🏻
I don't know if I mentioned this but this was a great session with Brian. Great questions and feeling all around.
Way to go guy, ya keep studying black holes as you major interest. When you just said there is no possible way to study them " no information ever comes out and we cant through him that far" but we can whis we could
Bet you "whis" you could spell 'wish'
Me: What day is it?
Brian: "Now thats a good question!"
I would ask which day it is(not "what" day..) and Brian would reply, as per usual, that it is a good question.
Also, don't make a sentence into 3 lines of text.
Brian cox and niel degrasse tyson are the only scientists to have ever got me interested In science and space... forever watching them lately...the geniuses in our generation alongside elon musk
18:20 if we can somehow measure the circumference then we should know the distance from centre to event horizon. Or is it more complex than that?
Well that's what he was saying, since it is so unimaginable dense, the way that it warps space-time itself makes it so that, what we see as the circumference from our position may be skewed because of the warps of space time, the way light bends around it, ect. So we measure the circumference as X, but in reality the space-time that is warped on the inside of the blackhole could be Y. We simply don't know.
This is Sheldon with social skills :) love it
He's like a fine wine 🍷💖
There should be way more views on this
I was going to say take a shot every time Brian grins, but actually fuck it he never stops grinning just down the fucking bottle now.
Absolutely brilliant as usual , love you coxy.
Great post - many thanks!
My question would be; is there a correlation or relationship between entropy and gravity?
BC has a very soothing voice.
Brian Cox is enormously talented and competent in his field with the boyish charm and looks of a young Paul McCartney minus the Liverpool accent.
Love Brian. I'm also from Oldham. That is my claim to fame 🤣🤣🤣🤣
Just realised Brian is wearing a Blade Runner shirt - what a legend!
The best bit was when Mr Cox said we should try electronics underwater! H&s embolism!
Its ok to not know stuff. All we can do is eagerness to learn. 😊
I just love him, thanks for such a knowledge and such a beauty.
I have that same celesteon telescope in the background of the video. Nice. SCIENCE
Albert Einstein nexstar 8se?
The fact that developing a space-ship-civilization took earth a third of the age of the universe... such a simple perspective yet widely overseen. Theres not much space on the timeline of existens when intelligent life could have developed. We are probably the first!
i very much wish i could have become an astronomer
Mr. Coxs is a grand motivator
I wouldn't be surprised if black holes are simply a distance of size, between two adjacent regions. The event horizon is like looking in a microscope, the event horizon of the lens. Light doesn't escape because the particles of Light are ripped apart and form smaller particles INSIDE the region, enable the region to contain entire galaxies in miniaturize form. I also wouldn't be surprised if we find that our own universe has a similar feature, but from the inside looking outward, and we can't see it due to "Its" size. Bubbles within Bubbles.
Nie znam niestety języka angielskiego. Chciałam tylko powiedzieć że przeczytalam Jego dwie książki które zostały wydane w Polsce. Bardzo gorąco Go pozdrawiam. Od dziecka interesowałam się Kosmosem. ALE niestety nie skończyłam studiów z astronomii. Ale Bardzo mnie interesuje astronomia . Pozdrawiam Briana Coxa i czekam na nowe wykłady.
I nominate Brian Cox as the next Dr Who !
My theory is there is no centre of a black hole. I think it just goes in and out of itself within itself. I think it radiates like Brian Cox says. It shrinks then expands what it holds within it's self.
Thanks for this good quality of questions. I'm glad you didn't just ask about Aliens.
saimounika sudula thats what we humans want to know more xD
Is there a bad question in the universe?
Bc: Well we actually dont know but that is a good question
could quasars be a "teleporting" dumping point for the singularity in a black hole?
Brian Cox and Rodney Mullen need to do a series or at least one hangout. Skateboarding and physics go together like wine and cheese.
Joe danero
Damn you must be good if you can do Physics Experiments while riding a Skateboard. As for Cheese and Wine, Love Cheese but hate Wine.
Very interesting I love how Brian makes physics easy to understand. Also I'm glad he uses simple explanations because I kept getting distracted by his arms and I couldn't focus on his words🤡🤡
How on earth can Brian Cox have the answer to some of those questions.
loved this :)
Prof BRIAN COX ON LIFE FALSIFIES THE BIG BANG
1. When speaking of the chance origin of life Prof Brian Cox said the following
2. _"All it takes is a system far from equilibrium with a flow of energy and a spark"_
3. What he did not say was what he actually meant by _"far from equilibrium"_
4. What he meant by "spark" is a random improbable event favouring a molecular replicator
5. But _"far from equilibrium"_ in thermodynamics means in a state of *ORDER*
6. That is from one state of *thermodynamic order* some energy may be directed to create more *order*
7. Directed energy in thermodynamics is called *work* but its creation is inefficient producing heat
8. Therefore the former state of order is always greater than the latter state of order it may create
9. That means the work which created the former state of order must have come from a higher state of order still
10. Such a regression must stop at an original state of maximum order consistent with a creation and the second law
11. The Big Bang creates a state of *HIGH DISORDER* as indicated by the smoothness of the CMBR (equilibrium)
12. The Big Bang is falsified as a violation of the second law of thermodynamics. Q.E.D.
The observable universe is approx. 13.8 billion years in every direction? That would point toward the universe being much larger than we can see and 13.8 years isn't the 'birth' of everything, but perhaps maybe just the beginning of us.
Keep 'em cominggg
Love me some Brian Cox. Love that he has on a Blade Runner shirt (my favorite movie).
Seems like Brian was talking to a different camera most of the time. Come on editor dude.
Crispy Baked it’s called B-roll and it adds dynamics and interest to standard interviews u walnut
@@EpicSlaxGuy In your opinion...
"When Brian Cox talks, just shut up and listen." - Mark Twain
The story of the universe, finally...comes to an end.
Does PROFESSOR BRIAN COX AGE? 💓
He was in the band D-Ream. Played keyboards.
Is that a Celestron Nexstar 6SE
Can you please ask Brian cox about curved part of spacetime
I think Arthur .c. Clarke said that the centre of Jupiter may be a massive diamond? .I like it when Brian and Jim get together on UA-cam . With the moon being nearer to us than Mars wouldn't it be better to try and Colinnise the moon.😊
The electric eel does its thing with volts & amps in the water. But I get his point, nonetheless : )
Love the book from Carl Sagan on the shelv...