The Problem With Interstellar Travel

[@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.

[@NoPulseForRussians]

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

[@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!

[@SirThanksalot_1]

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.

[@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.

[@knewledge8626]

I told Orville and I told Wilbur and now I'm telling you, that contraption will never work.

[@prototropo]

@@knewledge8626 That misses the point, since not all progress is progressive, and in fact you raise that point perfectly--how much better are we with 30-ton metal birds polluting the skies with noise and CO2?

[@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.

[@andrewberridge4630]

It is text to speech software!

[@TheDarkSnaffle]

@@andrewberridge4630 Surprising. Better than most, then!

[@rapmastac1362]

This over indulgence of “AI” tools is frustrating, I want to make an algorithm using AI to scrub KZbin videos and kicking all the lazy AI content to the curb.

[@steveperryman8102]

Same text to speech voice as used on the "Dr. Wolf teaches chess" app ...

[@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

[@rodrigobonzanini8235]

Why?

[@Hr-sd5sd]

Read up about the colonisation of America by European explorers.​@@rodrigobonzanini8235

[@philo441]

Like every other first encounter

[@notsoancientpelican]

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

[@Hr-sd5sd]

@@notsoancientpelican I for one would love to prove him wrong.

[@notsoancientpelican]

@@Hr-sd5sdThere are many things each of us would intensely like to attain, but which are impossible. Whether we recognize the impossibility of the impossible, and how we deal with that recognition, might be one way of assessing mental health.

[@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.

[@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

[@Invictus_Terminus]

Passengers 2016. Your welcome

[@seanwebb605]

@@Invictus_Terminus Your?

[@belarusian8380]

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

[@dietrichess9997]

I'm having that drink now... 🙂

[@ギャフナーエリック]

Sure. I'll have a negroni.

[@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 😆

[@bob456fk6]

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

[@ronfisher5259]

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

[@charharn7011]

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

[@BobB-w4q]

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.

[@Yaketyyak21]

We are extraterrestrial.

[@kennybobby201]

Not according to the fermi paradox.

[@shaunrobertson1064]

@@Yaketyyak21 And?

[@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 .

[@thebeatfinder7559]

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

[@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.

[@sweepingdenver]

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

[@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.

[@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.

[@steveGreenlee-c2s]

🇺🇸✝️🙏…exactly!

[@jacobblumin4260]

Exactly. Forget about it until some really radically new technology is developed, e.g. travel by wormhole. But don't hold your breath. Might be a few thousand years.

[@msobert4]

Love this documentary, vocabulary is perfect and choice of words

[@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.

[@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.

[@wdd3141]

Written by Canadian-American writer A. E. van Vogt, first published in Astounding Science Fiction in 1944.

[@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.

[@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

[@jimaanders7527]

Imagine back in the 12th century: "Olaf, can we get daily trips from Oslo to Boston?" "Sorry, you'll have to wait a thousand years."

[@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

[@mikepatton8691]

They basically did that in Alien: Covenant, however that didn't work out so well for the embryos since it appears David, the AI controlled robot, intended to raise the embryos to be hosts for the Xenomorph. Bummer.

[@PraveenSrJ01]

Extremely interesting video!! Thank you so much 😊

[@ScienceTime24]

Glad you enjoyed it!

[@Raven72]

This blue spot is it.

[@robertfoster7807]

You want travel in space you must travel at speed of think. ( quote from Vladimir velcovic Serbian man who worked for the city of melville in Perth western Australia in a gardening crew now deceased)

[@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

[@mikepatton8691]

I once made a FB post where I figured out how fast you were moving while standing still, taking into account the speeds of the rotation of the Earth, the Earth orbiting the sun, the solar system moving through space, our galaxy moving through space, the expansion of the universe, etc. etc., I don't remember the exact speed anymore but you are basically speeding along at a blistering pace while even sitting on your butt.

[@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.

[@Kdhrheee54]

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?

[@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.

[@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.

[@therealCamoron]

Mankind never used to be so self-centered. John Adams once acknowledged his lack of artistic education as a matter of generational duty: "I must study politics and war, that our sons may have liberty to study mathematics and philosophy. Our sons ought to study mathematics and philosophy[...] in order to give their children a right to study painting, poetry, music, [etc.]"

[@sejwalvishu]

Amazing quote!

[@TimU2Cool]

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

[@Washington-Dreaming]

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.

[@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...

[@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 😊

[@SeattlePioneer]

Good post!

[@Zurround]

Unlike the moon landings and the upcoming (next few decades) Mars missions the ONLY way successful interstellar travel could happen is if the entire world UNITED and WORKED TOGETHER for it. It could NOT be an "us vs them" thing like the earlier space race to the moon or to orbit. And we would have to be totally united as a SPECIES somewhat like Star Trek. No more wars and no more corrupt economic systems based on extreme greed and the narcissism of the top 0.000001 percent of the population.

[@bradysmith4405]

Unless one nation happened to stumble upon a way to make traversable wormholes or warp drives. Or even some form of propulsion capable of getting near light speed.

[@uvlmover]

Not true... war and competition fuels innovation. We might not have nuclear medicine or nuclear power without a nuclear bomb.

[@EthaKidd1]

The way people treat each other on earth now, I couldn't imagine what a population of people stuck onboard a starship would do to each other.

[@charles-y2z6c]

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

[@rob0191]

It's a commonly known paradox

[@saucevc8353]

I don't think that's as big a problem as people make it out to be. Just retrofit the colony ship with the new warp drives and send them off to colonize a different planet.

[@charles-y2z6c]

@ It's not a problem, it's a thought experiment. I like your thought.

[@Peacefulambiences]

Great video!!

[@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

[@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.

[@mikepatton8691]

Good thing there aren't beaches in space.......😂

[@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.

[@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

[@mikepatton8691]

In a world where people actually elect Trump to be president, twice!, I highly doubt the civilization is heading in the right direction to figure out interstellar travel. We're much more likely to end up like the world as depicted in the forward looking movie "Idiocracy".

[@JJJJ-gl2uf]

Great video. Loved it.

[@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 .

[@adamlea6339]

Do those times taken to cross the Milky Way or get to Andromeda account for cosmic expansion?

[@opdawg817]

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

[@John-c4b6y]

Thanks for the Tip

[@Me97202]

I seriously doubt that humanity will last long enough to make it this far. We seem determined to destroy ourselves.

[@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.

[@RobGravelle]

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

[@patroberts5449]

And Far Far Away!😂😂

[@sunnyclimes4884]

If we get to the nearest star , what happens if there is nothing for us there, ie , habitable planet with water and oxygen. We can't just go back. Just sticking to our solar system is plenty enough.

[@PraveenSrJ01]

Even our own solar system is ridiculously vast

[@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.

[@scottread]

How long at warp 9?

[@shawns0762]

For some reason people don't know about the one realistic method for interstellar travel. If a ship travels at a constant 1 g acceleration rate it would get to Alpha Centauri in 3.6 years (7.3 years would pass on Earth) this includes turning the ship around halfway to decelerate. It would achieve about 95% light speed in 1 year. A 10 ton ship would require a mere 10 tons of continuous thrust. This is by far the fastest way we can get to other worlds and the ship would have gravity the whole way. All that is needed for this is a fission rocket that can put out thrust for long periods and does not consume hydrogen. A true fission rocket should consume uranium or plutonium only. They are both jittery atoms that are on the verge of fissioning all by themselves. There should be a way to get them to fission in a linear fashion. What's needed is a controlled, time released nuclear explosion. In an atomic bomb fission occurs when neutrons hit uranium or plutonium nuclei. This is because they will not tolerate an increase in mass. Due to the equivalence of mass and energy the same should be true if you infuse them with energy. This might be as simple as having negatively charged uranium or plutonium atoms coming into contact with positively charged uranium or plutonium atoms. Or perhaps with laser or electromagnetic forces. With the constant acceleration method a ship can span the entire diameter of our galaxy in 24 ship/113,000 Earth years. Systems with stars similar to our sun can be reached in under 10 ship years.

[@jeanlouis1898]

Sounds like science fiction bro

[@shawns0762]

@@jeanlouis1898 It's been written about since at least the 1960's. The concept is on Wikipedia if you want to research it. I also made a video which illustrates 3 potential methods to get uranium or plutonium to fission in a linear fashion with an electrical current. A true fission rocket should not be more complicated than a chemical rocket.

[@shawns0762]

@@ConontheBinarian A fundamental aspect of General Relativity is the phenomenon of dilation (sometimes called gamma or y) mass that is dilated is smeared through spacetime relative to an outside observer. It's the phenomenon behind the phrase "mass becomes infinite at the speed of light". A 2 axis graph illustrates the squared nature of the phenomenon, dilation increases at an exponential rate the closer you get to the speed of light. If a bullet was heading towards you at 99% light speed you would have nothing to worry about because relative to you every aspect of the bullets existence would be smeared through spacetime. Also the ship would be at maximum velocity in the voids between systems were the chances of significant mass being in the flight path would be astronomically low. Also the ship would have radar. RF emissions would travel at light speed regardless of the ships velocity.

[@jicalzad]

Can humans actually tolerate this speed for that long?

[@shawns0762]

@@jicalzad It's just a constant 1g, exactly what we are all experiencing right now. Relativistic effects are all from an outside/stationary/Earthbound observers point of view. No matter how fast the ship goes everything will be normal from the ships point of view.

[@Apocalypse_Meow...]

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

[@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.

[@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?

[@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.

[@carlosbardales4179]

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

[@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.

[@supa3ek]

Well..................gotta start sometime !!! lets go !!!!!!

[@flashahhasavedeveryoneofus2824]

Why not pick them up in the new ship

[@baelavay]

Braking and accelerating would be very costly.

[@jamesl4171]

Or at least tell them other people are on the way and will likely reach the planet before them.

[@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.

[@SeattlePioneer]

So you are traveling at many times light speed, but you are going to deaccelerate to below light speed, pick up a large colony of people and then accelerate to many times light speed again? If you were flying New York to LA, would you land your plane and pick up a wagon train of people stranded beside the highway of people stranded for the winter at Donner Pass? How would you SPOT such a distressed group? How would you slow down?: How would you take off again?

[@baronvg]

@@SeattlePioneer Hypothetical FTL spacecraft is fine but picking up passengers on the way is TOO sci-fi for you??? 😂

[@SeattlePioneer]

@@baronvg I used to hitch hike across the country. I was used to being passed by. And no, I'm a relativist, not a scientific masturbator who peddles faster than light travel as "science." As FICTION, it's FINE!

[@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.

[@Galactic_Machine]

The reason why we search for alternatives is because Earth cannot be sustainable for life forever

[@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.

[@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

[@andresalgado9375]

That is an Asari ship at the nine minutes mark!

[@terrycooper4149]

Traveling near the speed of light hitting a grain of sand would completely vaporize the spacecraft.

[@leecowell8165]

Deflector shields...

[@dinkmartini3236]

Or as I like to say "The dust speck will tear through your ship like a dump truck going sideways."

[@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…

[@off__world8668]

the universe isn't designed to travel between the stars , your local solar system is the furthest any species will ever get .

[@or2ak]

You don't know the future technologies we'll have.

[@Zurround]

@@or2ak I won't be around to see this but I think Star Trek and similar futuristic science fiction is not far enough in the future. If we manage interstellar travel AT ALL it will be THOUSANDS of years in the future. Avatar is absurd to take place in the mid 22nd century.

[@bradysmith4405]

50% light speed (and consider acceleration and deceleration times) and you’d be in the nearest star system in about a decade. So I don’t think you can completely rule out hyper advanced races traveling to nearby stars.

[@off__world8668]

@@bradysmith4405 fantasy

[@momono6590]

But you would reach there in future while you are in present​@@bradysmith4405

[@sleekilla]

Send robots first 🤷 they got them doing damn near everything we can do anyways

[@semicolon101]

Its not the same man

[@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.

[@richardmercer2337]

There are only three problems with interstellar travel. (1) getting there (2) surviving while there (3) getting back

[@MarianneOz]

Best comment 😊😊

[@adamrussell658]

On the subject of near light speed travel - consider how much propellant a space ship needs just to get escape velocity on earth. Now multiply that by 27000 to get close to light speed, and an equal amount to decelerate once you got there. And remember propellant isnt your fuel its the stuff that you fire out the back end of the rocket. Also, remember that when you carry that much extra mass you need MORE propellant to accelerate that!! Theres just no way to carry that much mass.

[@7515-j3w]

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.

[@Deanster101]

Advanced civilisations burn out too quick to master long distance travel. It is extremely unlikely two of them will ever meet at the same moment in space time.

[@bubbles3161]

Create a hyper link using probes. We could map our galaxy in 100,000 years . But everyone one wants achievement in their life time. Probe’s built and sent out from mars could transmit signals to the next probe eventually bringing us to vast regions of space. The maps could be used for space travel delivery on the other side of the galaxy in a quantum state. Possibly seeding a habitat for humans.

[@WeSRT4]

If there is life out there is irrelevant. The distance makes even communication impossible.

[@joeblack3878]

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

[@SeattlePioneer]

It's a long way to Tiperary, It's a long way to go.... It's even farther, to Proxima Centauri, And the sweetest girl I know!

[@chefscorner7063]

I like all the pros and cons to this scenario in the comments section. It shows me that I'm not the only person that believes nothing is impossible, we just haven't figured out how to do it yet. 👍

[@bigcong7845]

9:35 He just explained Stargates replicators

[@NavajoNinja]

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

[@ChaoticScape]

If you treat space like the ocean then it's 1000% possible for us to be a space faring civilization. What's the difference between being stuck in the middle of the ocean and being stuck in space?

[@johndavies5121]

Radiation, micro meteors ect

[@Buzz_Kill71]

@5:39 I'm pretty sure the direction of your galactic year orbit is backwards 😂😂

[@moneri7184]

If the Parker probe were to leave from our solar system to cut across the milky-way through the centre (ignoring gravitational boosts from heavier celestial bodies), the solar system reaches the other side (half galactic year) before the probe get's there. If the galactic year is reduced to a 7-day week, the probe cuts across the milky-way 2 days before the solar system completes a full galactic year.

[@haroldschultz20]

Interesting video! Interstellar and intergalactic travel seem to be confined to the realm of human imagination. We can’t even compute the actual toll on our resources and it’s cost. With human suffering and strife a perpetual issue for mankind, who could justify the co$t to humanity? These and a lot more questions are unanswerable! Let’s be satisfied with our home and work to improve and preserve what we have.

[@rogercoziol3027]

This video only consider one aspect of the problem, the large distances. Another aspect, possibly fatal, is that the conditions out of Earth are inhospitable: lack of gravity and constant irradiation by cosmic rays would require drastic adaptations. Not to mention also that space is a dirty place and that a large ship traveling at high speed has a high probability to collision with micro particles with catastrophic consequences. In short, the dream of humanity is not in colonizing space but in improving the favorable conditions of living on our planet. For that we need to increase our consciousness beyond the pressure of adaptation, which is already a formidable endeavor.

[@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.

[@Maghribi100]

Intergalactic travel is totally impossible because you seeing galaxies where they were millions of years ago, so its just impossible to tell where they are currently located

[@mikepatton8691]

It is not even close to impossible to currently locate another galaxy's actual location, we know the direction a galaxy is moving and we can tell how fast it is going, then it's just a simple matter of running the numbers. Personally I suck at math, but people smarter than I could definitely figure it out.

[@cgustaff4807]

Interstellar travel will remain a dream for many thousands of years.

[@epicmusicproductions4015]

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

[@wtfsalommy3250]

Kinda like we were meant to be stuck near home.. i mean,im not complaining 🤣