The Problem With Interstellar Travel

The Problem With Interstellar Travel
🚀✨ Ever wondered why we're not zooming through the galaxy, hopping from star to star like it's no big deal? Well, "The Problem With Interstellar Travel" dives deep into the reality behind the sci-fi dreams of voyaging through the cosmos. From the daring explorations imagined in movies to the cutting-edge achievements of probes like NASA's Parker Solar Probe, we're on a quest to uncover what it truly takes to journey between the stars.
As we unravel the challenges of space travel at unimaginable speeds and distances, we'll explore the ethical dilemmas of generation starships and the breathtaking possibilities that lie within our own Milky Way. But it's not all smooth sailing; the vast distances and the haunting silence in response to the Fermi Paradox leave us pondering our place in the universe.
Are we on the brink of becoming a spacefaring civilization, or is interstellar travel a dream that will remain just out of reach? Join us as we confront the significant hurdles and marvel at the ingenuity of human progress, all while navigating the complexities of venturing to the stars. It's a journey through the cosmos you won't want to miss. Buckle up for an enlightening ride into the future of space exploration. 🌌🛸
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[@FvGa]

That 7000 years was like knife to the gut. Basically without teleportation we're useless. Excellent video.

[@neutronstar9038]

Well said though it might possible someday.

[@davidbrown4271]

Speak for yourself 😜

[@apscreditcards]

No, all that is required is inventing FTL drives and inertial dampening! If we only had those two technologies we could innovate our way around any other requirements, and we would be all over the Solar System in a matter of a few decades…after that The Great Mass Colonization Explosion will occur! It will be GLORIOUS, man!

[@DeFraans]

and even then, he says it's 100 generations. But you have to count generations between ages of reproduction, and I don't think each and everyone of them will have babies at 70y old. So it's easily double...

[@frgv4060]

Thing is, all this is talking about breaking running records while we haven’t yet learned to walk and just barely we are starting a very clumsy crawl.

[@lowkeykarnak]

How is being born on a generational starship without a choice any different from being born anywhere else? As far as I can recall I wasn't given a choice in the matter of my birth.

[@stevenbrown4001]

Because of the negative physical and psychological effects traveling in space can cause. Imagine learning about how your ancestors came from a big planet with land and water, while you learn that you were forced to live in a spaceship with limited choices in food and beverage. Also, radiation is a huge problem and this is all considering that everything goes as planned.

[@MrGoogleChill]

Let's put you on a claustrophobic ship and send you into the void and find out what the difference is. At least here you are on your home world with creature comforts. Clown question!

[@bullveigh2526]

its not the choice of location, its the idea that parents are choosing that their descendants would never experience Earth, only confinement unless this ship has that "holo deck" i think its called :)

[@Retrohertz]

​@@bullveigh2526Sounds perfect.

[@michaelselz3389]

But u were

[@silentvoiceinthedark5665]

We can not even build a pencil sharpener that will last 700 years let alone a generational ship that is required to last 7000 years.

[@icecold9511]

And having to take all your fuel energy with you. Solar isn't possible in interstellar flight.

[@claudiocorleone7856]

Lolololol!

[@JohnHumkey]

Yeah, we'd not only need to birth/raise/train new generations, but they'd also need to be skilled enough to run the factories to rebuild all the integrated circuits on the ENTIRE SHIP before they failed, roughly every generation. en.wikipedia.org/wiki/Whisker_(metallurgy) And we'd need the power/materials to operate those factories. Including replacing the ICs "in" those factories.

[@wizardchairman3691]

very funny.

[@jalee6587]

Imagine sending a generational colony out. And back on earth 2000 years in the future we discover warp or wormhole technologies. That 7000 year generational voyage would arrive 5000 years after that planet had already been colonized by earthlings.

[@sweepingdenver]

The “25 Milky Ways away” description actually makes Andromeda sound really close.

[@dernvader6876]

Theses are my favorite types of videos. Just more reason to respect and love our Earth Mother and each other... because its all we have.

[@maryam6138]

Imagine a movie about a generation starship that travels interstellar space, that’ll be so fun to watch

[@seanwebb605]

Sure if we can pair it with a second Barbie movie.

[@williamsimpson8115]

Try some Alistair Reynolds books , drags out the process nicely

[@flashahhasavedeveryoneofus2824]

They had show like that it got canceled at huge season 1 cliff hanger

[@quirkyMakes]

Passengers 2016. Your welcome

[@seanwebb605]

@@quirkyMakes Your?

[@notsoancientpelican]

“The stars are not for man.” -Arthur C. Clarke, *Childhood’s End*

[@macman975]

Just put the ship into 'Ludicrous speed' then go into 'Plaid' and you'll get there in a jiffy :)

[@rhetorical1488]

stopping it is the problem😅

[@macman975]

@@rhetorical1488👍 I'm glad you get the reference mate 😊

[@iesusegoconfidoinvobis4309]

Sooooo, how can a ship going that speed, spot a bowling ball size asteroid, dead ahead, and maneuver around it, without the asteroid going cleanly through the spacecraft? There won't be any time to spot it, let alone avoiding it. Nope, I don't see interstellar traveling any time soon. Way too many risks.

[@macman975]

@@iesusegoconfidoinvobis4309 To be fair mate, it was just a reference to the film 'Spaceballs'.

[@iesusegoconfidoinvobis4309]

@@macman975Great movie, I loved it.

[@user-lb4yp4sl4y]

This explains why we haven't met extraterrestrials. No one can master interstellar travel.

[@johngeier8692]

Many breakthroughs may be required. Intelligent construction robots, genetic engineering to extend the human lifespan , sustained thermonuclear fusion reactors etc etc. It would definitely be desirable to have spacecraft that could travel a significant fraction of the speed of light.

[@leecowell8165]

Actually we don't know that. You're assuming that no other civilization millions or perhaps even billions of years older exists anywhere. I find that kinda thinking to be a stretch to be perfectly honest about it.

[@RegNarnoc21]

We are extraterrestrial.

[@kennybobby201]

Not according to the fermi paradox.

[@shaunrobertson1064]

@@RegNarnoc21 And?

[@TheDarkSnaffle]

Excellent video. Thanks for not using text-to-voice software which always makes videos sound so "robotic".

[@ProjectNarrowboat]

I thought that's what it was? My bad.

[@bob456fk6]

This is, and always has been, a very exciting topic. This video is really interesting with some numbers but not over burdened.

[@belarusian8380]

I need a drink after watching this. Join me? Excellent video!

[@dietrichess9997]

I'm having that drink now... 🙂

[@charharn7011]

I love the MASS EFFECT 3 the stories that come from the human mind!!

[@GEOFERET]

Scenario B was very eloquently described in an old sci-fi short story called "Far Centaurus" (I do not remember by whom). It's been years since I read it, but I still remember it.

[@alejandrocurado5134]

The Earth, solar system, and milky way are already travelling in space at amazing speeds

[@Nefylym]

Exactly, all we need to do is figure out how to totally stop our ship's inertial velocity, that is, detach from the frame being dragged along by the gravity of our galaxy.

[@chrisgraham2904]

...and the Universe is constantly expanding, so other galaxies are moving further out of our reach as time passes.

[@steveofthewildnorth7493]

It's all relative.

[@talharehman3664]

@@chrisgraham2904 We can't even dream of traversing our galaxy let alone the local group. The ones moving further out are not even in question. It's impossible considering the distances we're talking about. Even travelling at speed of light takes millions of years to traverse those distances and the ones moving further away are moving faster than light speed. It is simply impossible. I imagine it is nature's way of preventing a civilisation who evolves first to colonise other pockets in the universe or to wipe out life elsewhere. There might be many advanced civilisations in the universe, yet I believe there's no way they can make contact

[@ronfisher5259]

The scenario at 3:20 was predicted in Heinlein’s JA novels- technology jumped over the science in effect when the plans started

[@danielehiagwina]

One of my best sci-fi movies of all time. Raises loads of mind boggling questions I still ponder on till date 😊

[@Zurround]

I had some problems with it. 1. He was running a big farm only a few hours truck drive away from what was left of NASA and they did NOT seek him out. He said to his mentor that they did not even know he was alive until he tried to sneak in. 2. His own future self communicating with him back in time was an example of BOOTSTRAP PARADOX. Its the 2nd most famous time travel paradox after GRANDFATHER PARADOX. 3. One of the characters was left alone on the space ship for 23 years. Even if the life support and food/water could last you that long it is effectively 23 years of solitary confinement. You would go eat your own cr@p insane by this point. They may have gotten the science mostly right but the story continuity was very sketchy.

[@kanuni1979]

most overrated sci fi movie of all time, full of plot holes, cheesy acting, bad dialogues and illogical actions.

[@Nefylym]

@@kanuni1979 so say we all... but dammit, those special effects sure looked nice lol ... and what was up with that god-awful soap box drama delivery about some nonsense about love being the eternal force in the universe? what a crock of shit, just look at your parents and tell me love is anything but a shit show

[@msobert4]

Love this documentary, vocabulary is perfect and choice of words

[@tkralva.6668]

Scenario 3. The planet which could support life, already has a civilisation living on it and the arrival of humans would be catastrophic for thar civilisation and humans.

[@MangUcokProductions]

That's what happened in Avatar lol

[@caynaanshecabdalemohamed500]

I hope that one day human will achieve the ability to travel between stars.

[@mariahelenafigueiredo6493]

Voyager already travels in Interstellar space! The human being is not on Voyager but the human being controls it!

[@caynaanshecabdalemohamed500]

​@@mariahelenafigueiredo6493i mean using by generation ship

[@Zurround]

@@caynaanshecabdalemohamed500 I already posted above why generation ships are such a bad idea. Almost every science fiction book with that theme has led to sociological disaster of some kind. It almost never goes well in science fiction. And please, none of this "its only fiction" nonsense. Those authors had a very good understanding of human psychology and sociology and human nature.

[@mariahelenafigueiredo6493]

@@caynaanshecabdalemohamed500 What?

[@mariahelenafigueiredo6493]

​@@caynaanshecabdalemohamed500 "Voyager 2", before leaving the Solar System, became the only probe to pass by the gas planets Uranus and Neptune! Its twin, "Voyager 1", also launched in 1977, became the first spacecraft to enter interstellar space, in 2012, and is currently around 24 billion kilometers from Earth.

[@pauleypavillion6088]

We will end up having to find ways to go to other stars that defy the laws of known physics we know of and do it within our lifetime.

[@xpndblhero5170]

2:00 - Sounds like Starship Earth.... That's basically what we're doing but we don't have a destination, at least one that we know of. LoL 😆

[@bondjames4053]

Seems we gotta start taking care of our planet 😮

[@GaZonk100]

tell the third world that, because they are the problem

[@DesertRat332]

I agree. Mars is not a solution as so many like to believe.

[@qpwodkgh2010]

If we don't, it will take care of us. Life will always be here, just no humans.

[@tonytaskforce3465]

@@qpwodkgh2010 Amen.

[@JJJJ-gl2uf]

Great video. Loved it.

[@leecowell8165]

Another problem is dealing with acceleration and on the other end deceleration. We're comfortable with NOT moving relative to what we're moving on. But getting there presents a humongous problem.

[@Mx32-]

I think the best solution for interstellar travel is given in the sci-fi book 'Alien From Earth' by Sobers Rodrigues. The book is awesome.

[@Zurround]

Can you tell us in a nutshell?

[@charlesbaldo]

So we build a ship that gets us to another star system in 7,000 years. In 300 years we figure out how to travel light speed, in 500 years we figure out warp drive to do multiples. Do we stop at the ship that only made it. 300 years, pick up their descendants and let them know their sacrifices were in vain?

[@Theveganshift77]

Assuming you can even find that ship

[@lizzysmith-jones3368]

If only we could live long enough to actually witness this!

[@tonytaskforce3465]

The whole thing is pointless and boring. Like watching paint dry.

[@opdawg817]

Until we develop the technology to collapse space, we ain't going nowhere outside our star system.

[@sidensvans67]

Excellent description of the vastness of space . Everything is just too far away with our current abilities . Absent a Star Trek warp dive or similar .

[@kwaki-serpi-niku]

Human beings will never ever ever go anywhere else other than what is immediately around this little blue ball that we have so graciously been placed upon. So if we can't make the best of what we've got, then we're all going to be miserable human beings.

[@ProudCommie]

It’s funner to try and explore

[@Theveganshift77]

​@@ProudCommieinterstellar travel is unfeaseble

[@TimU2Cool]

The current fastest spaceship would take 70.000 years to get too the nearest star

[@Radrook353]

The problem with that proposition of finding humans there because of technological progress during the generational ship's voyage, is that it begs the question of why wasn't the generational ship contacted during all that time.

[@benjaminmeza5372]

So basically, the bottom line is... humans are screwed. Everything is much too far and it's too expensive to go to space.

[@blinkybill2997]

Yes, we are. It'd be very very difficult to even travel t our closet planet (Mars), which is only some 100 million kms away on average. Then, there is no oxygen no water, high radiation, freezing temps (minus 130Celsius, no plants, no oceans, only rocks and sand, there is no atmosphere.

[@paulmartos7730]

We are a very young species. We developed (steam) powered machinery about 300 years ago. About 130 years ago it was generally believed by scientists that we would never be able to fly. About 100 years ago we thought our galaxy was the entire universe. About 80 years ago we thought the "sound barrier" was unbreakable. We can reach any point in our solar system in a few decades, and research suggests that before long we could shrink that to weeks. What about 100 years from now? 300? 1000? The obvious point is that we do not and most likely cannot know the limits of our technology -- and the physical laws of the Universe.

[@danymalsound]

Every other "dominant" species on earth has gone extinct... why would we be exempt from this?

[@BennyB5555]

Einstein's theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. Essentially, the math does indeed check out though. We also need to keep in mind Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity. The first black hole known was Cygnus X-1, identified by several researchers independently in 1971. Just 100 years ago we found that there was more than the Milky Way. It was only when Hubble measured the distance to the Andromeda galaxy. He was using cepheid variables with the giant 2.5-meter reflector on Mount Wilson in 1924 that the existence of other galaxies similar to the Milky Way in size and content was established. It will take time but eventually there will be a way to traverse the galaxy and hopefully the universe using methods that we could only dream of. It would help if the world would come together ending ridiculous wars which only delay progress.

[@tonytaskforce3465]

@@paulmartos7730 Cue 'Star Trek' theme. Sadly nothing, repeat nothing, goes faster than light in this Universe: but if you're not doing anything for the next 7000 years look up this guy and go for it.

[@wayando]

Imagine volunteering for a 7,000yr mission ... Then learning after 50yrs that they made a better ship that only takes 100yrs to get there ... And has Cryo sleep technology.

[@leecowell8165]

That would suck.

[@gevansmd]

That's part of the surprise ending of the Twilight Zone "The Long Morrow".

[@Krysdavar]

That would definitely suck. But hopefully they have developed and integrated areas for passengers of ship 1, and simply pick them up on their way.

[@wayando]

@@Krysdavar ... That would require a whole lot of fuel to slow down for them, and then speed up again ... Unless the ship is purpose built for them. Likely they would just accept their fate that the shop is their new home for generations and generations ... They would probably arrive as a different species.

[@Krysdavar]

@@wayando They probably would (arrive as a different species). 7,000 years worth of generations go by - currently we really don't have that many historical records of things that happened on earth 7k years ago. It's a pretty vast amount of time to go by for humans, for sure.

[@donnie6178]

I love the video though. It's just so vast that it's impossible for us to think that we're the only life in the universe.

[@victorian-dad]

We need warp drive and soon! Pick up the pace Zefram!

[@Nefylym]

ha! he's still drinking himself to death in the cantina on cheap moonshine and rocket fuel

[@youngandrew66]

We need an interstellar bus service. Imagine waithing for aons... and then two come along at once (if earth is even considered worthy of a bus stop

[@MarianneOz]

Both are out of service

[@mhoover]

Gee, you'd think the new guys would stop and pick up the old guys and save them a couple thousand years.

[@steveofthewildnorth7493]

Should well tell them? Nah, they'll figure it out themselves....eventually.

[@Peacefulambiences]

Great video!!

[@baronvg]

lol I’ve heard that thought of being passed on the way by a faster more advanced ship. But no one ever brings up the idea that maybe the second ship could just stop and give the passengers from the first ship a lift.

[@I_am_StacksDinero]

Yeah but for that trip to the next star… using the Parker Solar Probe… are you basing your calculations off the current top speed of the probe? Because it’s possible for the probe to be BOOMERANGED or SLINGSHOTTED multiple times before or during its journey to that next star… Which in theory would speed up the voyage drastically…

[@gevansmd]

Scenario B was used in the tragic Twilight Zone episode, "The Long Morrow".

[@John-ct9zs]

Sending robots/AI is the best bet. Though the technology on Earth would make a robot sent into space outdated in just a couple of years, not to mention hundreds of thousands of years,....if we are still here.

[@thebeatfinder7559]

There’s an Interstellar party happening out there and we are not invited.

[@jalee6587]

Imagine sending a generational colony out. And back on earth 2000 years in the future we discover warp or wormhole technologies. That 7000 year generational voyage would arrive 5000 years after that planet had already been colonized by earthlings.

[@seanwebb605]

Hey I was born on Earth without a choice. Maybe we didn't start here.

[@hemlighet]

Please elaborate

[@seanwebb605]

@@hemlighet I was born on Earth. I had no choice in where I was born. We don't know that the early forms of life that led to humanity originated on Earth.

[@zibam982]

You may have not; like I found out I was not from here. Your soul travels through.

[@michaelselz3389]

U were

[@steveofthewildnorth7493]

@@seanwebb605 Occam disagrees.

[@trapkat8213]

Great presentation. I haven't seen the distances between stars in galaxies, and distances between galaxies, demonstrated before. One complaint: If you have a nine digit number like 169,645,913 don't read out all the digits. It is longwinded and harder to understand than "almost 170 million".

[@ScienceTime24]

I will keep that in mind

[@user-iq6cc3df3l]

Of course traveling to Mars, even agreeing to live there, is way different than going to the next star system. If you went to Mars and something bad happened, you still have a “life boat” probably to return you to Earth in case of sone unforseen event. But 4.5 light years away there probably is no good way to send someone back after half way. It’s like a jet flying over the Atlantic from New York to Paris. Once you’ve travelled 1500 to 2000 miles, even in an emergency, it’s better to continue your voyage as the distance forwards or backwards is the same. So if you agree to leave Earth on a voyage like this you agree to never return.

[@user-yy9hk9od9u]

This is why space exploration must be done with probes and Ai.

[@11C1P]

Don't worry, Zefram Cochrane invents warp drive in about 40 years.

[@phildavenport4150]

Yes, the son of Alcubierre. Changed his name and found a heap of dilithium crystals in outback Antarctica.

[@tonytaskforce3465]

@@phildavenport4150 That's the guy. I was with his uncle in the US 417th Deserter Division during the war. Can't remember which one though...

[@danielvolinski8319]

A multigeneration mission will have the same problem again and again: every generation could decide to change the original goal and embark on a different mission. The last generation, the one that finally arrives to their goal, can decide not to colonize the target because they have lived on the spaceship all their lives, the spaceship is their home, they can decide not to abandon it.

[@BennyB5555]

One could argue that Earth could actually be a somewhat of a penal colony for some distant civilization. A planet where our ancestors have more capabilities than us. More senses. More intelligence. What if we found out that they had sent their “less than perfect” individuals to earth to fend for ourselves? Here we are trying to still trying to adapt and overcome. Hoping to eventually find our way home.

[@seaoftranquility7228]

I think that’s pretty much the premise of Scientology.

[@thehumancanary131]

Travelling at 99% the speed of light - and encountering a grain of sand...the resulting explosion would be equivalent to the kinetic energy released by 300 kg of high explosive. I think that might knock the windshield wipers off your spaceship!!

[@MarianneOz]

😂 but you would then have a cone shaped barrier at the front bit which would annihilate those pesky motes.

[@tonytaskforce3465]

@@MarianneOz Which you'll need to replace every ten minutes or so. And watch out for the debris flying back onto the vessel.

[@johndavies5121]

yes & without a strong magnetic field around the ship the intense radiation would cook you.

[@epicmusicproductions4015]

to me it seems we´re not meant to go to space...that´s why is so hard.

[@stevendamon7309]

Best spaceship ever is the one you're standing on right now - it's kind of childish and ungrateful to search for alternatives to it just because it didn't come with a throttle and a joystick.

[@outreachvideo]

The way we should be looking at it is this: it took one astroid to wipe out the dinosaur. The question has never been if we are going to get hit again. It's when are we going to get hit again. For that reason alone if we plane to go on as a species the only way that makes sense is to find a planet that is habitable for humans and find a way to get to it. We, humans, are a doomed species unfortunately. Interstellar travel for humans will never come about because to too many problems man can not overcome (needed speed and ship design, defense against space rocks that can destroy a ship or in other words a force shield to protect the ship..etc). We must remember that even if we overcome major obstacles as to how we will reach another planet we must remember the main reason it will remain impossible is our need for air and food. Man was not meant to be kept in the equivalent of a sardine can for years and just pop out of it and go on with his life. Nature doesn't work that way.

[@wkgurr]

Well we have to wait with setting out until faster travel becomes available. Once we can travel at 99.99% c the entire universe is within reach. Project Orion demonstrated a potential principle for a drive capable of achieveing such speeds. At a 1g constant acceleration it won't take much time to get close to these speeds (not taking into account special relativity). Again, Isaac Arthur has much to say about these issues and a visit to his channel is highly recommended if you are interested.

[@guardiaguardia3017]

Why the universe has to be so big and hard to travel. It defiance logic!

[@talharehman3664]

The only reason we survive is due to it being so big. Imagine a neutron star or a black hole close to us and it wouldn't be long before we became toast. The universe is violent, lucky for us the distances keep us safe from a lot of that. Imagine a civilisation that evolves first in a galaxy and becomes sufficiently advanced. It would colonise other planets and wipe out any local/less advanced species in the galaxy. The distances probably make it a significant challenge to move to other star systems, hence we have no evidence of any alien life yet, even though the universe has existed for billions of years with billions of planets just in our own galaxy.

[@youngandrew66]

Its all scale and lifespan. Real travel if its ever deemed useful will only happen when we can fold spacetime. Traditional A to B straight line travel wont cut it.

[@bradysmith4405]

Haven’t watched the video yet but I think it’s interesting how in Avatar the ship to Alpha Centauri apparently hits a top speed of 70% light speed. And it takes 5 months to accelerate and 5 to decelerate. Just interesting how that of all movies is the one to follow the known laws of physics when it comes to interstellar travel.

[@AlanRPaine]

To reach 70% of the speed of light in 5 months is an acceleration of about 1.6 g. Quite a lot to endure for that length of time. If the ship weighed 1000T, which doesn't sound very much when you look at Avatar, then the energy to accelerate it would be about 250 x the annual energy output of humanity and the same to slow it down. This ignores the weight of the fuel.

[@bradysmith4405]

@@AlanRPaine I read that it does accelerate at about 1.5 g and that the fuel is antimatter. The crew is in hibernation so maybe the high g’s aren’t supposed to affect them as much. I’m sure it would require technology way beyond what we can comprehend now and maybe certain aspects are off but at least it’s not ftl or instant acceleration. Though I still hold out hope that we’ll find some mathematical loophole around light speed, other than warp drive.

[@AlanRPaine]

@@bradysmith4405It would require a fabulous amount of energy to make the anti-matter required; hundreds of times the current annual energy output of humanity, as I already indicated. Handling such a large amount of anti-matter would be very hazardous because even a small quantity would make a huge explosion if it came into contact with normal matter.

[@bradysmith4405]

@@AlanRPaine yes we don’t have this tech and probably won’t for many decades if not centuries but at least it doesn’t break physics

[@ianlassitter2397]

Once we learn to adjust gravity…propulsion won’t be necessary. Bending space time will be easier. Which how we will all visit each other in the future within our life span.

[@RobGravelle]

Come on, they could travel between galaxies in Star Wars, and that was a loooong time ago.

[@patroberts5449]

And Far Far Away!😂😂

[@Mad_Martigen]

That's why we will always be alone in the universe. Traveling tremendously long distances is simply impossible for the human body to endure. We'll just live and survive here on earth while we can before we destroy it with politics and religion. Killing ourselves to extinction with warfare.

[@NightDocs]

What if we sent just human embryos that would be developed at arrival and then raised by an AI? That would be so fucked up I wanna see that movie

[@dermotthompson2115]

Given the cosmological principle, we don’t need to go far because things are essentially similar everywhere

[@johngeier8692]

It appears that close Earth analog planets with oxygen producing life and a breathable atmosphere are quite rare.

[@jefferypease3920]

Maybe the stars planets solar systems galaxies are so far apart is because we weren’t meant to go there

[@Alex-vz2jz]

We can go anywhere we put our minds to, the main problem is. . . Time, we don't have time

[@steveofthewildnorth7493]

No, actually, we can't. Physics is just a cold, hard truth.

[@outerrealm]

Haven't watched this yet. Wonder if there's anything I don't already know, like you can't travel faster than light, you can't go into a black hole and survive, there's no reason to think wormholes will give you shortcuts across spacetime, there's no realistic theory about building an actual warp drive, etc.

[@joeblack3878]

I fear that we humans will end ourselves before ever reaching intergalactic space travel.

[@peternorthrup6274]

We are going to just have to wait till someone shows up and shows us how to do it. I don't see any other way.

[@bigcong7845]

9:35 He just explained Stargates replicators

[@dansmith5730]

need a robotic or AI ship with embreo as crews and have them grown when with in years of arriving at Promixa

[@spaceace1006]

The one thing that most Sci-Fi ignores it the phenomenon of Time Dilation! Maybe in the Star Trek universe, Warp Drive gets around it?? Maybe?? But then, Impulse Drive gets around it as well???

[@rexpayne7836]

We've come so far in such a short time, I'm sure we'll get there. If we don't kill each other. 🇦🇺 😊

[@flashahhasavedeveryoneofus2824]

If you like murder mystery / space ship themed shows check out Ascension last aired for one season on sci FYI in 2014 it did on cliff hanger FYI with no season to be released

[@Apocalypse_Meow...]

🤯 Finally getting to your destination & people greet you with "Dang, took you all long enough! Relax, have a beer."😡 🤭😂😂

[@jp23x]

Isn't it wild that if we sent a ship now in a 1000 years a newer ship would pass it?

[@kumars1961]

The first thing that comes to mind is that you cannot predict the future based on the knowledge and technology available today . Just two hundred years ago who would have believed that air travel, setting foot on the moon and sending probes beyond the solar system will happen in the near future. Considering the progress science and technology have achieved during the past one hundred years, one can say without any doubt that anything and everything is possible. If so much progress could be achieved in such a short span of one hundred years, just imagine what it would be like in the year 5000 AD. I am absolutely certain that mankind would have gone beyond the Alpha Centauri system by then.

[@ridehead8771]

What baffles me is how astronomers know these distances when they can't be even reached?? Can anyone explain to me!

[@MeBallerman]

I'm very surprised to hear that the average distance between stars in the Milkyway is as little as 5 LY. The stars we can see from Earth is much, much farther away, not only from Earth, but also between them. This means that the galactic centre must be packed + packed with stars, to make an average of only 5 LY in total. Surprise. (to me in the least)

[@brianlittle717]

Why do they measure these distances in light years? A year is the time it takes earth to obit its sun so what does the earth have to do with other star systems?

[@benoitvandenbroeck7175]

I think the only way to achieve interstellar travel is to change ourselves. As humanoid apes we are not adapted for space travel. Our bodies are designed for earth. But if we can modify ourselves, like take a digital form, upload our minds, then we can fit in much smaller and faster spacecrafts. Ultimately, interstellar travel will change us.

[@leecowell8165]

we could become inorganic. We consume an awful amount of organics. Just in my 81 years I've probably eaten a million sandwiches and that's just ME! And I've always drank a LOT of water... at least 2 liters/day... Well that's 58000 liters over my lifetime. and that's just ME!

[@leecowell8165]

food to ponder for sure. how organics can survive having to feed and excrete massive quantities of consumables no way that can happen without stuff like photosynthesis. Life here actually relies on a recycle of death to life and life to death.

[@jelink22]

Why would the Earth not tell the original ship that a faster version would pass them en route, and would prepare their arrival to make it much easier than what was originally planned? When people talk of planetary colonization, isn't that scenario the key to sustaining an increased population?

[@user-ko7dt1bp1q]

I think the average person has no idea of the vast emptiness of space, the incomprehensible distances from our interstellar neighbors. One thing I know is unless we can recreate normal gravity during months or years long flights throughout even our solar system, we will not survive. Humans evolved with earth's gravity. Not to forget the radiation, cosmic and gamma rays.

[@outerrealm]

Imagine the utter boredom and purposelessness of being born and trapped on a starship forever, with no options for a vibrant fulfilling life?

[@boke75]

Watching this video I kept hearing that song from the Beastie Boys. 😆

[@Alecs-X]

Humanity facing a double situation: space-time problem. We only need to solve one: space or time... think about it 🤔 Time is the answer 😮

[@peterc2248]

There were several key phrases in this video. The fleeting nature of existence - we are intelligent life forms but that does not guarantee our continued existence. We are just one of millions of species that have come and gone. We believe we are 'special' and we are, but only in our limited sphere of existence. To the planet and the wider universe we are utterly insignificant. I liked the expression of the galactic year being 169 million years. On that scale modern humans have been around for about 4 galactic hours of that year. The climate change crowd are so wedded to the idea of human caused climate change yet we have no idea of the influence of just one circuit of the galaxy on climate. There are much larger and longer forces at work in my view. The T rex was more 'successful' than us in terms of existence because it survived for about a galactic week but it did so by being a simple creature driven by instinct. It had no ability or desire to learn beyond basic existence. We on the other hand have advanced rapidly, so rapidly that we will, in my view, bring about our own end in some way. Nature rewards simplicity with longevity, think mosses, sharks, jellyfish - simple creatures that have stood the test of time. We don't have long on this world - enjoy it while you can 😊

[@JeaneGenie]

Probably best to forget this fanciful idea until technology is far more advanced. For now maybe we should just focus on the problems within our planet.

[@NavajoNinja]

Just go with it. If u cant, dont watch. 😊

[@willekln]

They would have to take into account black holes, radiation, & etc in such a journey.

[@Raven72]

This blue spot is it.

[@carlosbardales4179]

I say... let's take care of Mother Earth better..... she is the only spaceship we can actually ride thru time/space.

[@kurtb8474]

635, 266 km/hr. is 394,736 mph for those of us who don't use the metric system.

[@matthewbyrd2329]

The problem with humans is we have the ability to contemplate how miniscule our existence is, and the hubris to refuse the fact. The human paradox.

[@hedydd2]

It’s easy. Bend time and you bend space. Bend it enough and take the shortest route across two points, from now to the desired point in space and time. Perhaps such distances and times could be reduced to microseconds? Could the reverse journey be made with and precision though? The apparent absence of people from the future among us today would suggest that it’s not possible to get to a point earlier than the start of the journey, which would be problematic one supposes.

[@glenns9386]

That’s not how time travel would work because there’s a thing called entropy. Unless you believe in multiple dimensions with different timelines perhaps. But yeah as far as we know time moves forward in a linear direction.

[@hedydd2]

@@glenns9386 Multiple dimensions and multiple, even infinite universes should not be ruled out. We may find that the universe as we know it is fitted within a holding sphere on a tiny scale hidden in another dimension’s child’s toy storage cupboard with the battery that gives us energy about to run out any time soon, which in their time scale may be any time from this evening to millions of years hence, but only a few days in the alternative universe’s timescale. Fanciful? We just don’t know. We haven’t a real clue and probably won’t for thousands of our years if the human race lasts that long.

[@persona250]

@@glenns9386I believe the word you are looking for is causality not entropy .

[@Rancid-Jane]

Humans will never go but our intelligent machines could.

[@goldrussh]

Even after nearly 50 years, the Voyager spacecrafts are just a small fraction of one light year away from Earth.

[@seantyler7401]

Yes, but to the observer who is going 5 light years at near light speed, their time would slow down. And 5 years would no longer seem like 5 years.