I used to watch this happily with my parents when I was a child. I remember this scene very vividly. I'm amazed to see it again on youtube after all these years.
Hans Zimmers "Leave No Man Behind" from Black Hawk Down would be perfect music for this sequence. For people to benefit from relativistic space flight @ near light speeds they must go on the trip
I started reading Sagan's The Cosmos to my now 1 1/2 year old granddaughter a couple months ago. I shall begin to have her watch the series this Summer in between our time in the backyard garden.
This is my favorite part of the entire series. As a kid in the early 80s when I was 6-8 years old I watched this and left it with a far greater understanding of science than of people I knew in my daily life. We didn't have the word Autistic then so I didn't know I was that but I had no idea why people did what they did but I understood this stuff.
That’s awesome! I was also duly inspired by Dr. Sagan-went on to read 9 or 10 of his books, then read Asimov, Wheeler, Kaufmann, Gribbin, Hawking, Calder and many more-and became a soil scientist in the employ of the USDA/NRCS for 32 years.
"Pauulo says good bye to his little brother Vinchennnzo" I don't know why but I love listening to him say it like that haha. He almost had somewhat of a regal way of speaking
I still recall getting a chuckle out of that when me and my mom watched the original airing of Cosmos. Always had to be SO precise. The best occurs when he enunciates the !Kung tribe of the Kalahari-he must have practiced in front of mirror for hours, because the proper naming requires a special “clucking” sound with the tongue and the roof of the mouth. What a hoot Carl Sagan was!
Carl Sagan agrees with you! That's why he wrote books and starred in television shows, he wanted everyone to think critically as he did. It's up to us to embody the Sagan wisdom in ourselves as well as waiting for another Sagan type scientist to take Carl's old position.
I understand how Rick Springfield seems to never age a day from this Cosmos episode. Rick must be always travelling near the speed of light. Rick is in his mid 70's yet he looks 20 something.
My father introduced me to this video when I was about 12 or 13 years old. I was old enough to understand what they were suggesting, but not quite old enough to stick around long enough to realize that we can't really travel at the speed of light yet. So, naturally, I went and got my scooter--motor powered. I considered replicating what I'd seen here (or attemtping to) but then decided not to, because I didn't want to age so slowly while everyone I loved aged and withered away.
I was a little kid when this was on telly. I loved it, and I'm not sure why, because I hadn't really any clue what that Carl Sagan fella was going on about. But I remember I found his voice comforting, maybe because I thought he sounded a bit like Kermit the Frog at the time (though he doesn't really, but then again I am foreign). And also I liked Paolo and his magic red/blue scooter. A slice of my happy childhood suddenly in my mind again. Thank you for posting this video and giving me that.
that is science fiction. travelling far into space will not change how fast you age. if you are 40 and it takes you 60 earth years to fly somewhere, you will still be 100 by the time you get there, and will look like it too, if you're not already dead from old age before then. If you could fly to that place in 1 minute, and be back in 1 minute, you and everyone else on earth, would still be 2 minutes older than you all were before you left.
@@shaquadradeloiserussell8659if you traveled away from Earth at light speed for 1 minute, then return to Earth at light speed for the same amount of time almost 100 days would have passed on Earth in those two minutes.
Carl Sagan es un científico fascinante, por su trabajo (incansable) en la investigación y la divulgación científica en los campos de la astronomía, exobiologia, radioastronomia, la investigación de las ondas del sonido (el efecto dopler), el viaje en el tiempo a la velocidad de la Luz, (como en este caso del vídeo), la vida extraterrestre inteligente más allá de nuestro planeta tierra, y tantísimos otros temas muy interesantes, les envío muchos saludos desde la provincia de Buenos Aires República Argentina 🇦🇷
How did his brother survive all that time on the bench? What did he eat? Where did he poop? I hope the new version of Cosmos answers these loose threads.
Obviously, younger brother Vincenzo did not stay on the bench for fifty years. While Paulo took his relativistic ride, Vincenzo went on with his life, but returned to the bench at the same time every day, waiting for Paulo to return. The time dilation effects of special relativity led to a poignant reunion.
@theseaotter He was a master at explaining brilliant and complicated thoughts and ideas ina way that common folks like us could understand and that's a rare gift.. hopefully there will be another like him..
We hear an audible red and blue shift everyday as a sound wave. Listen to a car traveling on a road. You hear a high pitched noise as it approached, you hear an almost "exhale" lowered pitch as it passes. You have witnessed the effect Sagan is talking about. If we are in that car, our field of vision narrows due to speed relative to a "static" earth. Such a great video, thanks.
> If we are in that car, our field of vision narrows due to speed relative to a "static" earth. No it doesn't. The effect Carl is talking about, where things that are behind you appear in front of you, only happens at very near the speed of light. It doesn't occur at the incredibly sluggish speed of cars.
Watched this as a senior in high school when it came out. Of course, my dad couldn’t understand it and hated watching it. My mother watched only because of Carl’s voice. Science was my thing, not theirs.
I suspect Sagan would have loved the news that neutrinos may go faster than the speed of light. He would not have focused on what was wrong with his earlier point of view, but what the implications of this new discovery was. He would have considered this information the best information available at that time, and that's ok.
Don't buy oil of olay to prevent ageing. Just travel at the speed of light for half hour!! Seriously though, what a magnificent video. This boggles my mind and makes no sense but it's all true which is a mindfeck.
I have a practically overwhelming amount of memories of this ORIGINAL version of COSMOS. Nothing but respect though for the Neil DeGrasse Tyson version.😎👍🏻
I dont want anybody to think that they would be in some kind of twilight zone when traveling close to c. To you, your watch is ticking normally, to an observer, your watch ticks very slow.
No it wouldn't. 'Time' does not have one definition. It is all relative to each individual object, and yet it is also relative to all objects at once. Its all down to perspective.
Carl Sagan explains such complicated theories in such simple ways that people with almost no knowledge of physics and cosmology can easily understand what he is trying to explain.
In short, light is always traveling the same speed, then again we define space and time by light so light is always going straight too, it's the universe that curves and slows down. Sidenote for anyone interested With the LHC now its cool, H+ going ~the speed of light, get added energy, so they, instead of going faster, expand in size.
@ALackOfLife Quantum Entanglement occurs when photons, electrons, or molecules, interact physically then seperated creating an odd connection. yes it DOES sound silly, but seems to work that way. When their linked, the resulting member of the pair is set by the same quantum mechanical properties (state), which is indefinite (Quantum Superposition) with such factors such as position, momentum (these two ring a bell?), spin, polarization, etc. The issue where information can't be sent... cont.
If Paolo's Scooter got 60 miles per gallon, and he traveled the Speed of Light for just 10 minutes he would need a fuel tank that held about 2 quadrillion gallons of gas! What a great video. Mind expanding to think that Time does pass at such different rates and some brilliant minds discovered this with just pencil and paper (or chalk and blackboard) to do the requisite mathematics...
If you were to travel at exactly light speed, time actually *would* stop for you. Getting to the speed of light, however, would require more energy than exists in the universe.
QUESTION! Therefore, if we do ever travel close to the speed of light and go to a plat, let's say 1000 light years away. Did we simply age of a few years in that case? which would make it possible for use to travel long distance in once lifetime? (without the help of worm holes)
We need more people like Sagan and less dirtbag politicians and middle eastern dictators. In 1000 years we will either by far more advanced then we could ever dream, or we will be consigned to dwell on our weaknesses rather then our strengths.
@ALackOfLife Comes into the fact that observation causes the entanglement process to collapse or sever, which forces the particles to take on definite states. Ergo, you can't send information through quantum entanglement. As a side note on wormholes, you should try looking up negative mass or tachyonic fields.
With our current understanding of the world, it seems humans wouldn't survive the journey, yet this is an imaginative journey. Still, it is assumed that we can suvive the journey and the person traveling wouldn't die of old age since time outside your scope would pass faster relative to you, but your experience within the fast speed would seem normal.
@justinjiang, no. according to Einsten's theories, time is stretched out for the fast-traveller. That would make his clock running late. Anything else unclear? I've heard that the clocks onboard human-built satellites in Earth's orbit need to be readjusted continually because their shift in space-time. I also heard about a cosmonaut being in Earth's orbit for such a long time that his time had shifted a few milliseconds (comparing to ours).
most common example is astronauts and space satellites. Astronauts in their average career will have travelled fowards in time by 20 hours... also the time on satellites have to be constantly adjusted to match a master clock on the earth. The time onboard a satellite creeps ahead into the future because of the speed they travel at all the time.. this is everyday stuff
@zakalwe30 I know what you mean though, Im am not experienced in these sort of things, I only have basic understanding of sorts. people say mass is increased as you reach closer to speed of light, but from what I understand, people confuse mass with momentum, or energy
to a person who is observing a ship approaching the speed of light would the ship seem as though it is slowing down as it is getting closer to light speed because time is slowing down to the ship so the observer would see this as well? Another way to put it is there is a track the ship and the people on it are travelling around this track at light speed to them the journey only takes 4 mins from point A to B but to the oberservers it takes hours so to the observers would the ships slower than..
@Corcoancaoc Exactly. If the Sun were to disappear instantaneously, we wouldn't feel it's shock wave for 8 minutes. Which is the time it takes light to travel from the Sun to the Earth.
@ubercoolist I love it when people literally can think of no way to defend themselves and resort to cheap insults. Keep it up. You only bury yourself further.
@Galentw that's what I still cannot understand. Traveling at the speed of light to an observer would actually be considered a very slow way to travel if time for them goes by faster than for those traveling at near light speed.
@justinjiang, the watch doesn't slow down. An outside observer who looked at the traveller's watch would see that the watch was ticking slower than usual, while the traveller wouldn't see this slow-down. He would actually see the surrounding world a tad faster!
there's agood example about this. Imagine you watch a clock; what you see is the light that goes to the clock and then to your eyes, so you see it's moving; but if you go to the speed of light wlaking away from it and watching it, you'll see the same time always, until you stop, because you're going at the same speed of the image you received when you was in front of the clock (of course in real life you wouldn't be able to see the clock because of the distance, unless is a big star size clock)
we cannot observe reality directly, we are always slightly behind, waiting for the light to reach our eyes. maybe the 'answers ' mankind search for are in this delay. at the moment all we can do is look into the past.
You'd see either a black or white TV screen, since its a recording of light waves and refections, - Not real life. All colors would blend, to the human eye watching the TV. No light waves would accually be distorted.
I used to watch this happily with my parents when I was a child. I remember this scene very vividly. I'm amazed to see it again on youtube after all these years.
How's life been these last 11 years?
@@freshtoast3879 it's getting worse
@@dragospahontu no doubt
Hans Zimmers "Leave No Man Behind" from Black Hawk Down would be perfect music for this sequence. For people to benefit from relativistic space flight @ near light speeds they must go on the trip
I started reading Sagan's The Cosmos to my now 1 1/2 year old granddaughter a couple months ago. I shall begin to have her watch the series this Summer in between our time in the backyard garden.
Carl Sagan was a genius at communication.
Perhaps the greatest science popularizer of all, even possibly a level up from Isaac Asimov.
The world REQUIRES more people like Carl Sagan. Let us all find more ways to cultivate and to nourish people like him. 🙂
Hear, Hear!
Paulo got places to BE
Hilarious comment. 😂
This is my favorite part of the entire series. As a kid in the early 80s when I was 6-8 years old I watched this and left it with a far greater understanding of science than of people I knew in my daily life. We didn't have the word Autistic then so I didn't know I was that but I had no idea why people did what they did but I understood this stuff.
I saw it when I was younger n today 2022, I'm now a data scientist for NASA. Carl influenced.
That’s awesome! I was also duly inspired by Dr. Sagan-went on to read 9 or 10 of his books, then read Asimov, Wheeler, Kaufmann, Gribbin, Hawking, Calder and many more-and became a soil scientist in the employ of the USDA/NRCS for 32 years.
If hell is where Cal Sagan is, that's where I want go
Did this guy just acted as Vatican police against a harmless joke?
No you dont
Hail Sagan!
"Pauulo says good bye to his little brother Vinchennnzo" I don't know why but I love listening to him say it like that haha. He almost had somewhat of a regal way of speaking
I still recall getting a chuckle out of that when me and my mom watched the original airing of Cosmos. Always had to be SO precise. The best occurs when he enunciates the !Kung tribe of the Kalahari-he must have practiced in front of mirror for hours, because the proper naming requires a special “clucking” sound with the tongue and the roof of the mouth. What a hoot Carl Sagan was!
His voice was incredible. When he started pronouncing ancient egyptian words, i knew he had to be someone special.
So brilliantly explained in simple terms. Cosmos is still, today, one of the greatest popular science shows ever made.
What a legend Carl Sagan is... World needs more like him!
Carl Sagan agrees with you! That's why he wrote books and starred in television shows, he wanted everyone to think critically as he did. It's up to us to embody the Sagan wisdom in ourselves as well as waiting for another Sagan type scientist to take Carl's old position.
I understand how Rick Springfield seems to never age a day from this Cosmos episode. Rick must be always travelling near the speed of light. Rick is in his mid 70's yet he looks 20 something.
My father introduced me to this video when I was about 12 or 13 years old. I was old enough to understand what they were suggesting, but not quite old enough to stick around long enough to realize that we can't really travel at the speed of light yet.
So, naturally, I went and got my scooter--motor powered. I considered replicating what I'd seen here (or attemtping to) but then decided not to, because I didn't want to age so slowly while everyone I loved aged and withered away.
italian restaurant service slows down at noon. great presentation to make it memorable. and also a bit of cultural exchange.
Can still remember watching this as a kid and being blown away
I was a little kid when this was on telly. I loved it, and I'm not sure why, because I hadn't really any clue what that Carl Sagan fella was going on about. But I remember I found his voice comforting, maybe because I thought he sounded a bit like Kermit the Frog at the time (though he doesn't really, but then again I am foreign). And also I liked Paolo and his magic red/blue scooter.
A slice of my happy childhood suddenly in my mind again. Thank you for posting this video and giving me that.
This episode got me hook on Cosmos and the speed of light.
Totally fascinating; everyone should watch these vids!
Love Carl Sagan...RIP...
Only after I saw interstellar I realised how hard it would really be to experience something like that.
that is science fiction.
travelling far into space will not change how fast you age.
if you are 40 and it takes you 60 earth years to fly somewhere, you will still be 100 by the time you get there, and will look like it too, if you're not already dead from old age before then.
If you could fly to that place in 1 minute, and be back in 1 minute,
you and everyone else on earth, would still be 2 minutes older than you all were before you left.
@@shaquadradeloiserussell8659if you traveled away from Earth at light speed for 1 minute, then return to Earth at light speed for the same amount of time almost 100 days would have passed on Earth in those two minutes.
Theoretically
@@SiphiliSx
No it would not have.
One Earth minute is still one Earth minute, regardless where ever you are in the universe.
Traveling at the speed of light. Awesome. :D
Carl Sagan es un científico fascinante, por su trabajo (incansable) en la investigación y la divulgación científica en los campos de la astronomía, exobiologia, radioastronomia, la investigación de las ondas del sonido (el efecto dopler), el viaje en el tiempo a la velocidad de la Luz, (como en este caso del vídeo), la vida extraterrestre inteligente más allá de nuestro planeta tierra, y tantísimos otros temas muy interesantes, les envío muchos saludos desde la provincia de Buenos Aires República Argentina 🇦🇷
Very fascinating, thanks!
I really enjoy the beautiful Italian sights
I remember watching this while in my 8th grade science class. This explained things so much.
Sagans best ever series!
How did his brother survive all that time on the bench? What did he eat? Where did he poop? I hope the new version of Cosmos answers these loose threads.
Obviously, younger brother Vincenzo did not stay on the bench for fifty years. While Paulo took his relativistic ride, Vincenzo went on with his life, but returned to the bench at the same time every day, waiting for Paulo to return. The time dilation effects of special relativity led to a poignant reunion.
This has honestly got to be one of the most trippiest scenes from this series. Change my mind.
@theseaotter He was a master at explaining brilliant and complicated thoughts and ideas ina way that common folks like us could understand and that's a rare gift.. hopefully there will be another like him..
We hear an audible red and blue shift everyday as a sound wave. Listen to a car traveling on a road. You hear a high pitched noise as it approached, you hear an almost "exhale" lowered pitch as it passes. You have witnessed the effect Sagan is talking about. If we are in that car, our field of vision narrows due to speed relative to a "static" earth. Such a great video, thanks.
Yep the Doppler effect affects light waves and sound waves :D
> If we are in that car, our field of vision narrows due to speed relative to a "static" earth.
No it doesn't. The effect Carl is talking about, where things that are behind you appear in front of you, only happens at very near the speed of light. It doesn't occur at the incredibly sluggish speed of cars.
Nice
Awesome! Quantum light tradectory!
Your second sentence is masterfully written; do not discount your own ability to spread knowledge.
Fantastic video....Watch it!!
That bit about light receeding is very interesting - I kind of knew about the other parts, but not about that.
I wish I could travel back to those times, god I hate 2022
Not unless we can travel at the speed of light
Go fast, stay young.
Watched this as a senior in high school when it came out. Of course, my dad couldn’t understand it and hated watching it. My mother watched only because of Carl’s voice. Science was my thing, not theirs.
this just blew my mind lol
Wow
I suspect Sagan would have loved the news that neutrinos may go faster than the speed of light. He would not have focused on what was wrong with his earlier point of view, but what the implications of this new discovery was. He would have considered this information the best information available at that time, and that's ok.
Don't buy oil of olay to prevent ageing. Just travel at the speed of light for half hour!!
Seriously though, what a magnificent video. This boggles my mind and makes no sense but it's all true which is a mindfeck.
I have a practically overwhelming amount of memories of this ORIGINAL version of COSMOS.
Nothing but respect though for the Neil DeGrasse Tyson version.😎👍🏻
Mind=blown.
This is honestly too elite a mind
A mean to get to the stars 🤩
❤
Does blue and red have the same wave frequency? Or a conceptual rapresentation
Is capable to possess two overlapping quantitative meanings?
I dont want anybody to think that they would be in some kind of twilight zone when traveling close to c. To you, your watch is ticking normally, to an observer, your watch ticks very slow.
@manwithouthat44 man i love his voice
@ALackOfLife good point.
@BlockisticStudios It meant that you experience time at a slower rate than an observer as you travel closer to the speed of light.
I remember watching this as a kid. Weirded out by the ending.
No it wouldn't. 'Time' does not have one definition.
It is all relative to each individual object, and yet it is also relative to all objects at once.
Its all down to perspective.
Dem retro effects. (-:
Carl Sagan explains such complicated theories in such simple ways that people with almost no knowledge of physics and cosmology can easily understand what he is trying to explain.
Carl sagan is my new god
@opticmovies There was a PBS program, I think it was called "Einstein's Miracle Year" that explains the phenomenon very nicely.
Thank you. I'm a Christian who agrees with you 100%.
In short, light is always traveling the same speed, then again we define space and time by light so light is always going straight too, it's the universe that curves and slows down.
Sidenote for anyone interested
With the LHC now its cool, H+ going ~the speed of light, get added energy, so they, instead of going faster, expand in size.
Where can I get hold of the complete series of the cosmos by Carl Sagan ?
Amazon...?
@ALackOfLife
Quantum Entanglement occurs when photons, electrons, or molecules, interact physically then seperated creating an odd connection. yes it DOES sound silly, but seems to work that way.
When their linked, the resulting member of the pair is set by the same quantum mechanical properties (state), which is indefinite (Quantum Superposition) with such factors such as position, momentum (these two ring a bell?), spin, polarization, etc.
The issue where information can't be sent... cont.
If Paolo's Scooter got 60 miles per gallon, and he traveled the Speed of Light for just 10 minutes he would need a fuel tank that held about 2 quadrillion gallons of gas!
What a great video. Mind expanding to think that Time does pass at such different rates and some brilliant minds discovered this with just pencil and paper (or chalk and blackboard) to do the requisite mathematics...
Just as Carl Sagan had a “magic camera”, Paulo had a “magic motorscooter”. All to perform the “thought experiment”.
The Italians sure make some sick mopeds
If you were to travel at exactly light speed, time actually *would* stop for you. Getting to the speed of light, however, would require more energy than exists in the universe.
Wonderful to see this again 43 years later, I think Mr. Sagan prefaced this by saying "imagine the speed of light was 60mph" or some such thing?
QUESTION! Therefore, if we do ever travel close to the speed of light and go to a plat, let's say 1000 light years away. Did we simply age of a few years in that case? which would make it possible for use to travel long distance in once lifetime? (without the help of worm holes)
tired light..The AMATIMAS BLINK..
We need more people like Sagan and less dirtbag politicians and middle eastern dictators. In 1000 years we will either by far more advanced then we could ever dream, or we will be consigned to dwell on our weaknesses rather then our strengths.
@ALackOfLife
Comes into the fact that observation causes the entanglement process to collapse or sever, which forces the particles to take on definite states.
Ergo, you can't send information through quantum entanglement.
As a side note on wormholes, you should try looking up negative mass or tachyonic fields.
@BranZyme there was a miscalculation in the test. also neutrinos are a subatomic particle of an atom.
@UltimaXG2 Oh yeah I realise that.. but it's still pretty amazing!
With our current understanding of the world, it seems humans wouldn't survive the journey, yet this is an imaginative journey.
Still, it is assumed that we can suvive the journey and the person traveling wouldn't die of old age since time outside your scope would pass faster relative to you, but your experience within the fast speed would seem normal.
I want that bike
"Your NOSE is just a little closer to me than your ears."
@RotaryKnight Yes, but doesn't relativity posit that as your speed approaches the speed of light, your mass approaches infinity?
@Apophisguard lol I'll keep that in mind. Thanks for the info ;)
Easy there Gods-speed-y-Gonzales!
@funkydankspliff. True, but its a pretty good indication of absence.
Italians sure know how to make a bike
@justinjiang, no. according to Einsten's theories, time is stretched out for the fast-traveller. That would make his clock running late. Anything else unclear?
I've heard that the clocks onboard human-built satellites in Earth's orbit need to be readjusted continually because their shift in space-time. I also heard about a cosmonaut being in Earth's orbit for such a long time that his time had shifted a few milliseconds (comparing to ours).
We all will eventually die and become space dust again, this is a certainty
the younger brother was basically Hachiko
Go into the light Carol Ann
most common example is astronauts and space satellites.
Astronauts in their average career will have travelled fowards in time by 20 hours... also the time on satellites have to be constantly adjusted to match a master clock on the earth.
The time onboard a satellite creeps ahead into the future because of the speed they travel at all the time.. this is everyday stuff
This shit makes me cry every time
Crazy Italian scooters
@zakalwe30 I know what you mean though, Im am not experienced in these sort of things, I only have basic understanding of sorts.
people say mass is increased as you reach closer to speed of light, but from what I understand, people confuse mass with momentum, or energy
That's some special Vespa right there
Filming location ????????
to a person who is observing a ship approaching the speed of light would the ship seem as though it is slowing down as it is getting closer to light speed because time is slowing down to the ship so the observer would see this as well? Another way to put it is there is a track the ship and the people on it are travelling around this track at light speed to them the journey only takes 4 mins from point A to B but to the oberservers it takes hours so to the observers would the ships slower than..
@Corcoancaoc
Exactly. If the Sun were to disappear instantaneously, we wouldn't feel it's shock wave for 8 minutes. Which is the time it takes light to travel from the Sun to the Earth.
@ubercoolist I love it when people literally can think of no way to defend themselves and resort to cheap insults. Keep it up. You only bury yourself further.
@BlockisticStudios I'm no expert but i do know that light particles are massless, maybe that has something to do with it.
@Galentw that's what I still cannot understand. Traveling at the speed of light to an observer would actually be considered a very slow way to travel if time for them goes by faster than for those traveling at near light speed.
@justinjiang, the watch doesn't slow down. An outside observer who looked at the traveller's watch would see that the watch was ticking slower than usual, while the traveller wouldn't see this slow-down. He would actually see the surrounding world a tad faster!
there's agood example about this. Imagine you watch a clock; what you see is the light that goes to the clock and then to your eyes, so you see it's moving; but if you go to the speed of light wlaking away from it and watching it, you'll see the same time always, until you stop, because you're going at the same speed of the image you received when you was in front of the clock (of course in real life you wouldn't be able to see the clock because of the distance, unless is a big star size clock)
we cannot observe reality directly, we are always slightly behind, waiting for the light to reach our eyes. maybe the 'answers ' mankind search for are in this delay. at the moment all we can do is look into the past.
Do you get tunnel vision because the light you would ordinarily see reflected off of the objects outside of the tunnel doesn't have time to reach you?
Paulo should wear a helmet if he's gonna go that fast...
You'd see either a black or white TV screen, since its a recording of light waves and refections, - Not real life.
All colors would blend, to the human eye watching the TV.
No light waves would accually be distorted.