@friendlyone2706 I just had in mind something Fraser said recently that apparently a lot of people were asking for shorter videos. I'm just letting him know that plenty of us don't want that too.
@@hah-vj7hc Frazier has mentioned that he's going to split his question shows so they're shorter cuz peeps were complaining that they were too long. We're just saying how we don't mind the longer videos.
Great interview. Who knows what an advanced civilization would/could do. Every week I’m waiting for these long form interviews from various scientists. Keep it up!
What im thinking is that... what if aliens are doing this for two reasons? Take energy/matter from the star AND doing ``Starlifting`` to make their star last longer?? Its a win win
As a species that can come up with these types of ideas, At our present, technological development, can you imagine what a more advanced species could come up with and achieve?
There's a difference between coming up with things and implementing them, though. Humans dreamed of flying even before the first word was written, yet it took tens of thousands of years to achieve that dream. And that's a dream we know is possible and could observe working ever since our distant ancestors first saw flying birds and insects. Other dreams like the idea of seven-league boots haven't been achieved and won't be anytime soon (just for reference, using the Roman measure for a league that speed would be >15 km/s - i.e. orbital speed within Earth's atmosphere) in the literal sense. So there's imagination, which famously has no bounds, and there's reality - there isn't always an overlap, but it's sure fun to try and find out nonetheless.
Knowing there are other advanced civilizations that could potentially **be like us** would above anything else put us on notice that we are lagging behind.
Like gigantic interstellar whales nudging stars like killer whales herd fish so they can then collect the energy. Like Fred Hoyle's The Black Cloud (a lesser variety of stellarvore?) , the stellarvores would be ignorant of any life forms that might exist on the rocks orbiting the destroyed suns.
Given the vast distances out there in space, my question would be related to destinations. If you live around a pulsar and have plenty of energy for everyday stuff ... where would the pulsar need to go and why?
One mechanism that I imagine would work would be to have a sail fall between the neutron star and it's host star to deflect radiation away from the side of the star you do not want to heat and remove it when on the side you want to heat. The "sail" which would be much lighter then either star and hence easier to control would act much as the "Gate" part of a Transistor Amplifier. If I understand the Transistor Amplifier correctly the "Emitter" would be the Neutron Star the "Base" the Sail and the "Collector" the Star.
Are planetary-scale collision events potentially visible from outside the parent solar system? Would the impact that created our Moon produce enough energy and luminosity, however brief; to be visible perhaps from the Alpha Centauri system if aliens had powerful telescopes aimed in our direction?
A planetary-scale collision event would change the orbit of the planet, which would be a visible change for a powerful enough telescope (we've calculated orbits already for a lot of exoplanets)
These kind of thought experiments in my opinion are extremely useful. It gets you to stop saying no blindly and you're going to have to say no with a whole lot of explanation. And shapes experiments possibly centuries before they would have happened without wild day dreams
Fraser! QUESTION! Can a Large molecular cloud spin fast enough to separate gasses into belts around a protostar, and is it possible Earth, Mars, Jupiter and Saturn merely migrated through a belt of ice explaining our oceans?
Happens for a different reason, but look up the astrophysics term "snow line". Basically it says that protoplanetary disks are hottest near their nascent star, and as you head outward the temperature of the disk drops. At some distance, water can form a solid instead of vapor, and at this point there will be a sudden accumulation of "icy dust" causing a density bump, and kicking off the rapid accretion of "ice giants" that could then become "gas giants".
@@frasercain Fusion was 30 years away when I was an excited youngster in the late 1960s. It is still 30 years away now. I don't think I will see it in my lifetime.
34:30 this sounds odd. I’m pretty sure you’d get zero bits. You’d only have qbits. Is there a formula I’m not aware of for sending the largest number of bits per qbit? As far as I know, you’ll always have to worry about some remaining nonzero error probability.
Impossible for me to understand what your guest is saying on the podcast version. Probably understandable on the video version, but doesn’t work for me in audio only.
Appreciate these full length interviews. But Fraser, have you considered uploading small bite sized segments of fascinating parts of these interviews? I think it would be pretty helpful to grow the channel by teasing viewers with really good bits and then they can watch the whole interview for the full length discussion. It's also easy for us to share the content with friends.
Interesting science fiction but, as science, a load of nonsense. No one is ever going to move planets and stars. And I also doubt there's any such thing as a Dyson Sphere. {:o:O:}
Humans have already (accidentally) started building a Dyson swarm, satellites orbiting the sun using energy and emitting infrared radiation. If we keep making satellites, in a couple of hundred years there will be enough satellites in orbit around the sun to be detected from a few lightyears away and it would look exactly as the "Dyson spheres" are predicted to look like. Even the inventor of the idea, Mr Dyson said pretty much immediately that it would be more like a swarm of individual satellites rather than a solid spherical structure which would be unstable.
There's a very good reason to move a planet, if your star is going to go supernova. Assuming speed of light can't be exceeded then moving a star closer to other stars (or towards the galactic center) would mean more stars close enough for you to get resources from or colonize.
Pardon the cynicism, but ... Down here on Earth "Love" usually translates as "dopamine bribe to reproduce successfully". Many or most species down here don't even need that. But they do need energy! Spawning be Costly......
Like gigantic interstellar whales nudging stars like killer whales herd fish so they can then collect the energy. Like Fred Hoyle's The Black Cloud (a lesser variety of stellarvore?) , the stellarvores would be ignorant of any life forms that might exist on the rocks around the destroyed suns.
My one concern with the concept of noosphere is that the kind of system it evolves into depends on who's doing the guiding. Vladimir Putin is a proponent of this theory and would like to be the one doing the guiding.
@PhysicsPolice So first of all the searches have been limited to the local group. Second of all you're committing a major fallacy by assuming because we haven't seen red shifted galaxies therefore intelligent life isn't out there. All it does is put constraints on what is out there, and that is given our limited searches we don't see mass galactic red shifting ie. Stars on a galaxy wide scale aren't being used via dyson swarms as far as we can see in the local galaxy group. That is a constraint on aliens not being able to or not choosing to do such a major project across their own galaxies nearby us. That's it. There are other ways to get mass amounts of energy and they don't need to be galaxy spanning. So please temper your conclusions a bit..
@@gorbachevdhali4952 "So first of all the searches have been limited to the local group" No. There was a survey a few years ago, having trouble finding it on arXiv, but the team did a survey of ~16,000 galaxies including z up to 0.3. Looking for anomalous redshift of aggregate starlight from type III civilizations. They didn't find any. I don't conclude life isn't out there. I conclude type III civilizations aren't out there. I appreciate that my comment's wording was vague but I did include a timestamp to when Fraser was speaking specifically about type III civilizations. That's the context.
@@gorbachevdhali4952 Found it! "Searching for Kardashev Type III civilisations from High q-Value Sources in the LoTSS-DR1 Value-added Catalogue" by Hong-Ying Chen & Michael Garrett (2021)
@@gorbachevdhali4952 The paper is "Searching for Kardashev Type III civilisations from High q-Value Sources in the LoTSS-DR1 Value-added Catalogue" by Hong-Ying Chen & Michael Garrett (2021)
@@gorbachevdhali4952 "So first of all the searches have been limited to the local group" No. There was a survey of ~16,000 galaxies including z up to 0.3. Looking for anomalous redshift of aggregate starlight from type III civilizations. They didn't find any. I don't conclude life isn't out there. I conclude type III civilizations aren't out there. I appreciate that my comment's wording was vague but I did include a timestamp to when Fraser was speaking specifically about type III civilizations. That's the context.
Don't listen to people who want shorter videos Fraser ,people have the attention span of toddlers, keep the long form videos coming!
They are meant to advertise, not replace.
@friendlyone2706 I just had in mind something Fraser said recently that apparently a lot of people were asking for shorter videos.
I'm just letting him know that plenty of us don't want that too.
@@johnmackay3136 I agree with this!
Can some one give the TL DR of this dude's essay?
@@hah-vj7hc Frazier has mentioned that he's going to split his question shows so they're shorter cuz peeps were complaining that they were too long. We're just saying how we don't mind the longer videos.
Great interview. Who knows what an advanced civilization would/could do. Every week I’m waiting for these long form interviews from various scientists. Keep it up!
What im thinking is that... what if aliens are doing this for two reasons? Take energy/matter from the star AND doing ``Starlifting`` to make their star last longer?? Its a win win
As a species that can come up with these types of ideas, At our present, technological development, can you imagine what a more advanced species could come up with and achieve?
And they will pass us by, because we are not intelligent and peaceful enough... 🤔😏
There's a difference between coming up with things and implementing them, though. Humans dreamed of flying even before the first word was written, yet it took tens of thousands of years to achieve that dream. And that's a dream we know is possible and could observe working ever since our distant ancestors first saw flying birds and insects.
Other dreams like the idea of seven-league boots haven't been achieved and won't be anytime soon (just for reference, using the Roman measure for a league that speed would be >15 km/s - i.e. orbital speed within Earth's atmosphere) in the literal sense.
So there's imagination, which famously has no bounds, and there's reality - there isn't always an overlap, but it's sure fun to try and find out nonetheless.
Thanks!
You’re genuinely offering something unique!
Knowing there are other advanced civilizations that could potentially **be like us** would above anything else put us on notice that we are lagging behind.
really enjoyed this, good job Fraser
Like gigantic interstellar whales nudging stars like killer whales herd fish so they can then collect the energy.
Like Fred Hoyle's The Black Cloud (a lesser variety of stellarvore?) , the stellarvores would be ignorant of any life forms that might exist on the rocks orbiting the destroyed suns.
What a wonderful theory! Stellar engineering!
I see star eating aliens so i click
Thanks for having CC enabled
Given the vast distances out there in space, my question would be related to destinations. If you live around a pulsar and have plenty of energy for everyday stuff ... where would the pulsar need to go and why?
I prefer your long videos thanks 👍🏻🙏🏻
Earth: Mostly Harmless...
So long, and thanks for all the Fish!
🖖
Very cool, great interview.
One mechanism that I imagine would work would be to have a sail fall between the neutron star and it's host star to deflect radiation away from the side of the star you do not want to heat and remove it when on the side you want to heat. The "sail" which would be much lighter then either star and hence easier to control would act much as the "Gate" part of a Transistor Amplifier. If I understand the Transistor Amplifier correctly the "Emitter" would be the Neutron Star the "Base" the Sail and the "Collector" the Star.
Are planetary-scale collision events potentially visible from outside the parent solar system? Would the impact that created our Moon produce enough energy and luminosity, however brief; to be visible perhaps from the Alpha Centauri system if aliens had powerful telescopes aimed in our direction?
A planetary-scale collision event would change the orbit of the planet, which would be a visible change for a powerful enough telescope (we've calculated orbits already for a lot of exoplanets)
These kind of thought experiments in my opinion are extremely useful. It gets you to stop saying no blindly and you're going to have to say no with a whole lot of explanation. And shapes experiments possibly centuries before they would have happened without wild day dreams
great video as always 👍
Knew it!
best comment lol
Fraser! QUESTION! Can a Large molecular cloud spin fast enough to separate gasses into belts around a protostar, and is it possible Earth, Mars, Jupiter and Saturn merely migrated through a belt of ice explaining our oceans?
Happens for a different reason, but look up the astrophysics term "snow line".
Basically it says that protoplanetary disks are hottest near their nascent star, and as you head outward the temperature of the disk drops.
At some distance, water can form a solid instead of vapor, and at this point there will be a sudden accumulation of "icy dust" causing a density bump, and kicking off the rapid accretion of "ice giants" that could then become "gas giants".
This was a good one
Certainly a great thought experiment !
Are we ever going to have a fusion nuclear reactor?
You know what they say, fusion is always 30 years away. But ITER should be achieving first plasma in 2025. So it could be right around the corner.
@@frasercain Fusion was 30 years away when I was an excited youngster in the late 1960s. It is still 30 years away now. I don't think I will see it in my lifetime.
We already have a giant fusion reactor. You just need a bunch of photovoltaic cells to capture that energy and turn it into electricity.
@@frasercain Around a very big, wide corner....again.😁 Plasma technology aka Thunderstorm generator, is often described as micro-bubble fusion.
I thought its now only 20 years 'till fusion works? We are getting closer. 2140 it should definitely work!
Do you think PSR J1719 - 1438b could be from a black widow pulsar ripping apart most of a white dwarf?
34:30 this sounds odd. I’m pretty sure you’d get zero bits. You’d only have qbits. Is there a formula I’m not aware of for sending the largest number of bits per qbit? As far as I know, you’ll always have to worry about some remaining nonzero error probability.
But maybe they are nothing but one star that is gravitationally eating another one? Simplest explantion.
You're no fun, Occham.
Stellavore! Burp!! Maybe ate those documented disappearing stars.
star forge from KOTR
Impossible for me to understand what your guest is saying on the podcast version. Probably understandable on the video version, but doesn’t work for me in audio only.
It makes no sense, that's why.
Find hot signals near you!
😂
anyone else want lemonade now?
there is a limit to technology because we destroy ourselves
35:30 yes they have. “SETI at X-ray Energies - Parasitic Searches from Astrophysical Observations”
by Robin H. D. Corbet 2016
Appreciate these full length interviews. But Fraser, have you considered uploading small bite sized segments of fascinating parts of these interviews? I think it would be pretty helpful to grow the channel by teasing viewers with really good bits and then they can watch the whole interview for the full length discussion. It's also easy for us to share the content with friends.
soooo yes?
❤
Interesting science fiction but, as science, a load of nonsense. No one is ever going to move planets and stars. And I also doubt there's any such thing as a Dyson Sphere.
{:o:O:}
Humans have already (accidentally) started building a Dyson swarm, satellites orbiting the sun using energy and emitting infrared radiation. If we keep making satellites, in a couple of hundred years there will be enough satellites in orbit around the sun to be detected from a few lightyears away and it would look exactly as the "Dyson spheres" are predicted to look like.
Even the inventor of the idea, Mr Dyson said pretty much immediately that it would be more like a swarm of individual satellites rather than a solid spherical structure which would be unstable.
There's a very good reason to move a planet, if your star is going to go supernova.
Assuming speed of light can't be exceeded then moving a star closer to other stars (or towards the galactic center) would mean more stars close enough for you to get resources from or colonize.
@@sssfulton
I didn't say there'd be no reason. I said it will never be done.
{:o:O:}
isn't advanced alien civilisation will try to reduce the energy dependance? why do you need so many energy when you have love?
Pardon the cynicism, but ...
Down here on Earth "Love" usually translates as "dopamine bribe to reproduce successfully".
Many or most species down here don't even need that.
But they do need energy!
Spawning be Costly......
Blasted Dark Eldar stealing stars again
Stellarvores at this point sound more like "animals" than "people".
Like gigantic interstellar whales nudging stars like killer whales herd fish so they can then collect the energy.
Like Fred Hoyle's The Black Cloud (a lesser variety of stellarvore?) , the stellarvores would be ignorant of any life forms that might exist on the rocks around the destroyed suns.
@@friendlyone2706 This.
Is it just a language barriere or he is himself not sure where this study matter is goin xD
My one concern with the concept of noosphere is that the kind of system it evolves into depends on who's doing the guiding. Vladimir Putin is a proponent of this theory and would like to be the one doing the guiding.
45th to comment.
This idea is just way too .... out there. You could imply many similar ideas to almost all other stellar/galactic processes happening in the universe.
où est le cochon
33:00 sadly, we looked for these anomalously red galaxies and didn’t find them. It’s a dead universe out there.
@PhysicsPolice So first of all the searches have been limited to the local group. Second of all you're committing a major fallacy by assuming because we haven't seen red shifted galaxies therefore intelligent life isn't out there. All it does is put constraints on what is out there, and that is given our limited searches we don't see mass galactic red shifting ie. Stars on a galaxy wide scale aren't being used via dyson swarms as far as we can see in the local galaxy group. That is a constraint on aliens not being able to or not choosing to do such a major project across their own galaxies nearby us. That's it. There are other ways to get mass amounts of energy and they don't need to be galaxy spanning. So please temper your conclusions a bit..
@@gorbachevdhali4952 "So first of all the searches have been limited to the local group" No. There was a survey a few years ago, having trouble finding it on arXiv, but the team did a survey of ~16,000 galaxies including z up to 0.3. Looking for anomalous redshift of aggregate starlight from type III civilizations. They didn't find any. I don't conclude life isn't out there. I conclude type III civilizations aren't out there. I appreciate that my comment's wording was vague but I did include a timestamp to when Fraser was speaking specifically about type III civilizations. That's the context.
@@gorbachevdhali4952 Found it! "Searching for Kardashev Type III civilisations from High q-Value Sources in the LoTSS-DR1 Value-added Catalogue" by Hong-Ying Chen & Michael Garrett (2021)
@@gorbachevdhali4952 The paper is "Searching for Kardashev Type III civilisations from High q-Value Sources in the LoTSS-DR1 Value-added Catalogue" by Hong-Ying Chen & Michael Garrett (2021)
@@gorbachevdhali4952 "So first of all the searches have been limited to the local group" No. There was a survey of ~16,000 galaxies including z up to 0.3. Looking for anomalous redshift of aggregate starlight from type III civilizations. They didn't find any. I don't conclude life isn't out there. I conclude type III civilizations aren't out there. I appreciate that my comment's wording was vague but I did include a timestamp to when Fraser was speaking specifically about type III civilizations. That's the context.