How Many People Would We Need To Colonize Another Earth?

Various companies are working to settle on other planets. How long would it take and what issues would we face along the way?
Earth-Like Planet Discovered! What You Need To Know - • Earth-Like Planet Disc...
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Read More:
Estimation of a genetically viable population for multigenerational interstellar voyaging
www.sciencedirect.com/science/...
"Designing interstellar starships for human migration to exoplanets requires establishing the starship population, which factors into many variables including closed-ecosystem design, architecture, mass and propulsion."
How We Could Visit the Possibly Earth-Like Planet Proxima b
www.space.com/33844-proxima-b-...
"A potentially Earth-like planet has been discovered orbiting a star located right next door to the sun. Should humanity try to send a probe there as soon as possible?"
Inbreeding shaped the course of human evolution
www.newscientist.com/article/...
"Talk about an inauspicious beginning. For thousands of years our ancestors lived in small, isolated populations, leaving them severely inbred, according to a new genetic analysis. The inbreeding may have caused a host of health problems, and it is likely that small populations were a barrier to the development of complex technologies."
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Special thanks to Emily Calandrelli for hosting and writing this episode of DNews!
Check Emily out on Twitter: / thespacegal

[@WillOfMyD]

If we do go to Mars, we can't have any religious people on it. 1) I'm not an atheist 2) This is not an insult to any religion 3) I know religions will spawn on Mars " _Bringing earth-based religions to another planet could be disastrous. Give the new world a restart from religions, let them make new insert planet-based religions of their own. I want to see how the new religions would look like when it spawns in a futuristic new world._ " - Anthony! Senpai-kun~​​

[@nealmistry2375]

WillOfMyD yeah we will progress so much faster

[@WillOfMyD]

ljuc Ohhhhh, right. You're right.

[@hsbswjwsb]

WillOfMyD yes

[@theatheistpaladin]

Damned flat marsers!

[@jonnathan780]

Aye sir, no relegious people and there would be no wars, and everyone can work together and be more efficient

[@droopyeyedmofo5618]

Alright guys I'll take the job ... Just need about 500 women hella weed and chips

[@droopyeyedmofo5618]

And also give me Emily

[@WHO9119]

Only 500 shit you will get tired of them in the 1st Martian year you will need at least 2000 or more and make sure they don't speak to each other

[@kokofan50]

We'll grow them artificially, so you won't have to take one for the team.

[@acetheking3136]

kokofan50 lmaooo

[@droopyeyedmofo5618]

kokofan50 "we" or scientists?

[@MPT-io8ml]

The real big question is.... Is there wifi in the space ship?

[@thegamingsnake7198]

I think yes but everything that happens on earth will take a while to reach u ... But watching KZbin for etc .. Is ok

[@Hogaboga101]

Sure, but 4 light years away a page would take 8 years to load. 4 years for your click to reach earth and 4 years for the page to reach you. Good times!

[@andyofzz]

Hogaboga101 it's OK, I lived through the dial up age

[@ditoo2002]

Hogaboga101 get every song in the world downloaded then you can relax till you get a message sent to you

[@DjSonicMax]

LOL!

[@lifenoggin]

I volunteer!

[@XxXEpicPunchXxX]

Life Noggin whats up g

[@nevikgnehz368]

Life Noggin ayeee

[@WhackedMedia]

Life Noggin Do a video about purifying the sea water please!

[@AkshayAradhya]

Life Noggin Count me in too :)

[@lethearith]

Life Noggin no don't go cause we won't be seeing you on KZbin....

[@Kevin-um1nq]

Another Earth=Double the memes. I'm in.

[@da1gle603]

Minty eyyy

[@jjc5475]

hope the mars memes will be dank enough.

[@nesseihtgnay9419]

L

[@cawaz4573]

helll yyyeeeeaaahhhh

[@speedythunder1995]

Minty not just anyone go, they said NASA if they do and when they start to send people to Mars. the person would have to have a Bachelors degree.

[@schwarzerritter5724]

Can't they bring frozen sperm and eggs with them?

[@TheErudite21]

Um.... what??? That would not work at all if you wanted to actually populate a whole new planet... If you wanted to just relocate a couple folks yeah, but what studies are reading that says 150 is enough??

[@TheErudite21]

I take it you all read something like this: worldbuilding.stackexchange.com/questions/3/what-is-the-minimum-human-population-necessary-for-a-sustainable-colony Mathematically accurate but 1) Only applies to *space exploration*... where they would return after 10 or 20 generations... 2) Does not account for genetic drift, population bottlenecks, and freedom.. at all.... 3) Requires too much control over such things as gender, genetics, mutations, preferences, timing, etc... 4) Not at all robust enough to survive inevitable disasters and accidents 5) Read this: www.popularmechanics.com/space/deep-space/a10369/how-many-people-does-it-take-to-colonize-another-star-system-16654747/ But as for the OP: Apparently sperm can only be frozen for just one generation... I hope we can increase that number... but yeah, I think itd be optimal to do that + bring along robot wombs... which can actually carry out the fertilization and birth babies all autonomously.

[@brandon9172]

+Erudite I don't know much about robot wombs, but wouldn't that take away from the genetic diversity as the child would only be getting traits from the father (through sperm)? I also imagine that it would be good to bring Genetic Scientists. We would have to change a lot with the human body genetically to survive in space for the long term. Along with that of any plants or animals we bring. And also to wipe out any genetic disorder discovered within someone. Either that or they can't have kids.

[@Nathan-mv2me]

Schwarzer Ritter you saw that in interstellar didn't you?

[@fudgelame]

+Ryan Robinson i like your math and thinking, however if you simply go for the sturdiest but smaller than average females..and they have 1 child of their own with compatible donor, and 3 of females not in the colony all with compatible fathers to those females. Also if sperm and egg cells are collected of all those born there it would add more flexibility in case of deaths. Course RH factors and rejection of babies could be an issue and needs to be figured in also. others: i thought i remembered someone saying different figures of 14-22 humans being the minimum for independent colony (separated forever) on earth itself for enough genetic variety of a single race (or close enough to).

[@criticalpoint7672]

Yes but if you can manage to sustain for centuries thousands of people in a large spaceship, then why would we need a planet anymore ? Why not just build cities directly in space and forget about planets ?

[@1simo93521]

Critical Point Your name and comment are perfect. You are right we are thinking like primitive earth creatures not like an interstellar civilisation. We will build our own 'planets'.

[@basbruines890]

but we dont have the recources to man

[@milkhbox]

Bas Bruines That's why you find some little shit hole planet to strip mine for resources. Earth works!

[@davidbeppler3032]

GRAVITY. This is why Venus is a better place to colonize than Mars.

[@connork7301]

no body would want to live in a space ship

[@Kyrious]

It's crazy to think that we would have to travel 800 years. That would seperate the knowledge we have gained and likely make us alien to each other. 800 years is a long time.

[@alexardan9820]

A simple solution : - A ship with all the modules needed for the trip, colonize the new world and support the crew - A crew to flies and maintains the ship (about 500) - A CRYOGENIC module with millions of gametes/embryos And there you go ! Depending on the length of the trip you can use the gametes to maintain genetic diversity among the crew and it's the same once on the planet until the population reach self genetic sufficiency!

[@Patty___]

Yes! and embryos may be viable for up to 2000 years, no need for 14.000 people, or men for that matter! all you need is some good female fertility technicians.

[@Tlactl]

I always thought this was a good idea, but then wed have to have incubators to develop the babies, some way to teach the babies how to communicate and survive, and supplies for the babies

[@1simo93521]

Patrick Mc Laughlin No men? Who's going too lift heavy stuff and change the light bulbs. not to mention all the women would be fighting evety five minutes without a man to calm stuff down.

[@alexparker5127]

"Calm stuff down?" You mean be the scapegoat right?

[@Tlactl]

Gaming Duck massive things have a lot of inertia, so even in space you need to put a lot of force on a heavy object to make it start to move

[@MrMightymist]

I don't shake as much as her even on a dance floor.

[@jjc5475]

shake it babe

[@tripplehD]

EPIQ CritiQ me too

[@christianterrill3503]

she is very robotic but I don't mind

[@MyPeanutButtersHairy]

She certainly does talk with her entire body doesn't she?

[@blackblaze5271]

EPIQ CritiQ What the heck?

[@z0vc947]

This is the kind of stuff I like to see and I've always been most interested in. Please show more like this

[@SpaceGal]

yay!

[@heesingsia4634]

Should we explore Uranus?

[@jamesfra1311]

Hee Sing Sia We should probe it deep to the core!

[@MrSteveo114]

Don't bother, many others have already explored the shit out of it. It's an unrecognisable wasteland now.

[@thoughtyness]

I'm not gay!

[@dodosuify]

lol!

[@108mtsan]

It's a gas planet. There's no point in learning to live in that planet.

[@nevikgnehz368]

Who cares if she shakes her head. She is drop dead gorgeous!!

[@chowderstevens9375]

No she has the face of a 10 year old girl. So ya

[@armadillito]

Chowder Stevens that is the Internet and a lot of society's idea of attractive, it's kinda creepy. Ever watched animé?

[@belainegibsson.2082]

No Nah, I'd say so about the redhead that used to do these videos.

[@squeak9121]

I'd take her, and have shaky head babies on mars

[@fro-yo2622]

Mitten

[@kleinmann321]

If KZbin keeps it up with these 45 second unskipable Ads i'm may have to get adblock...

[@kleinmann321]

Canada. Used to having 15 second ads we couldn't skip, but some of these are getting ridiculous. Iv'e watched the same banking ad that is 35 seconds long about 8 times today...

[@chadatchison145]

Steven Dang! And here I thought it was bad two years ago when I stopped watching KZbin until a friend suggested I use adblock. Now I watch videos without ads and it's great, I don't know how ppl can get through a video with so many ads.

[@kleinmann321]

I don't want to use adblock, because I understand it supports the channels i love with ad revenue, but this is just getting stupid. And why the same damn add like 15 times in a row.

[@ethankoetsier]

Steven Bani just reload the page if it's too long

[@blackwings2885]

Steven Bani MA GAD MAN JUST REFRESH THE FKN PAGE!! And get and Adblock TF u doing with your life seriously...

[@__prometheus__]

"Hudreds of years away" wow really nice quality hosts and scripting you got there.

[@anthonygumbo8837]

Great topic , requires more thought

[@yesicanhula8062]

this Emily girl is adorable making science even better!

[@GoodGuyBiker]

The new girl is pretty :)

[@passoutrs]

I like does kinds of vidoes so keep posting vids like this

[@SamBrownBaudot]

Everyone always forgets about Project Orion. The project was cancelled before the kinks were worked out, But it was theoretically possible to launch a city off the planet. The catch: It's nuclear shockwave propulsion. Aside from the issues of fallout, it's dangerous and expensive to test. The individual blasts are so powerful the ship has a minimum size of a skyscraper, just to make the g-forces survivable. Anything smaller and the bombs would get very dirty or the crew would get splattered by the acceleration of surfing the bomb's shockwave. But if you built a city-sized Orion craft, it could surf comparatively clean H-bomb blasts and the massive size of the ship would smooth out the g-forces quite nicely. Most of the projects like the 100 year ship project are using similar ideas, but propose to solve the problems with fallout, jerky acceleration, etc, by using tiny laser ignited fusion pellets as the pulse units, instead of 1960's era bombs. That's a tech we're not very good at, yet.

[@valentingalvan121]

14,000 would be cool, but I would need a guarantee of longer life span and rights to rule the colony.

[@zwiebeldogs]

I dont think such a starship population is ever possible. Conflict and War in such a "small" place is certain, and most passengers would give up after a maximum of 5 years and start protests. It's inevitable that racism, "class" differences and so on in a limited space would lead to establishment of opposed parties and radicalism.

[@neeneko]

While it is safe to assume that there would be division and opposition within such a small population, that doesn't mean it isn't possible for them to survive.

[@jamesfra1311]

Greater Dog Snowdin It's easier to send human sperm and eggs in some form of storage.. But then again..

[@zwiebeldogs]

neeneko Yes, sure! But Musks (is that his name?) is making peaceful colonies. That's not gonna work unless you turn off emotions for the time they're in the spaceship

[@jjc5475]

well, if they make it a military like structure it may be going even better than on earth..

[@g.seangourlay2593]

Greater Dog Snowdin unlikely. 14000 is a small town. small towns tend to work rather well, politically. you don't need perfect harmony with everybody on board with every decision. just a system that works. also it is weird to assume a huge class divide with a small population like this one, while they're still on the ship. who do you think would take ownership of everything or accumulate all that wealth? it would likely be relatively egalitarian.

[@franciscomoutinho1]

I also happen to recall another study about a similar topic and they placed the number at 300. If you think about it, many small islands in the pacific have had stable populations even if isolated.

[@chadphriday197]

"we're gonna need a bigger ship" Nice Jaws reference. I like this one!

[@k11a22i33]

If this comment gets 10+ likes Emily will come back to host on here again

[@SpaceGal]

I'll probably come back regardless, but liked anyway ;)

[@k11a22i33]

Emily Calandrelli haha wow did not expect you to reply to my comment 😂 You seem really chill, definitely gonna follow you on twitter once I get back on it 👍🏼

[@jesusnieves2139]

Emily Calandrelli hi

[@RIPPEDDRAGON40k]

I feel like representing what we need in the future based on past technologies is a fools errand. With genetic engineering alone that 14,000 could be much smaller. Couple that with advancements in medicine and robotics, people might not die on a several hundred year journey. Exponential knowledge growth will push human bounds far further than is currently imaginable.

[@JustinRCampbell88]

holy crap, I was thinking about this question just this morning. same day this came out

[@JustinRCampbell88]

if it's necessary and/or possible... you would need many crews set on a voyage to many different highly likely survival journeys. also, it would help if safe embryos (from radiation, etc) could slow down growth during the journey. if we could significantly slow down growth after contraception but keep all functions in tact, it could take less generations to colonize far off galaxies. we could use computers to teach developing children

[@JoshDaJewishKid]

I like your voice, its very easy to listen to.

[@SpaceGal]

thank you :)

[@JoshDaJewishKid]

Emily Calandrelli You're welcome :)

[@daddyleon]

This video was inspired by Netflix's Ascention?

[@jjc5475]

rather the aggressive natgeo campaign about mars.

[@daddyleon]

haha, yeah, who knows?

[@jannekrusing]

Hey guys, stop making fun of her. She's adorable! You are doing a great job Emily, and I hope we get to see you even more in the future!

[@SpaceGal]

Thanks! :) I do bobble a lot! will have to work on that ;)

[@jannekrusing]

No, don't change a thing! I find it very charming. We all have our quirks, that's what makes us unique! =) Keep it up haha! =P

[@SpaceGal]

well that's sweet of you! :) You'll have to let me know about the next few vids coming out - I tried to stand still more! haha

[@jannekrusing]

Hahaha. I will! =D

[@dopenarosthehighlord3580]

you are hot af

[@ErnietheChicken]

Hi Emily. wish I could be stranded on an island with you! Thanks for the vid.

[@mastermind849]

id love to be apart of an amazing journey like that

[@hansolo4017]

what about gravity. there bones would be too week to stand. what then???

[@NDRevo]

Harrison Hughes we adapt

[@mothereric8774]

Harrison Hughes, Or we just go all Ascension and use nuclear pulse propulsion that makes a constant enough acceleration to simulate gravity.

[@jjc5475]

use artificial gravity

[@hansolo4017]

because that's not a thing, and if you say centrifugal force, remember all thoes people walking around will slow it down meaning you need to spin it up again although i suppose you could use ion thrusters and do what mothereric said and use nuclear reactors

[@jjc5475]

Harrison Hughes yeah of course you need the spinning thing to be powered, have high hopes for a fusion reactor.

[@rockets-dont-makegood-toas7728]

what about cryogenic freezing tubes to allow us to sleep until we get there?

[@Tlactl]

Futurama lol

[@lilaclizard4504]

yup, makes sense to me! At the least we should be sending frozen sperm for genetic diversity, but cyogenics would be better

[@howardbaxter2514]

We first need to figure out how to prevent aging. We’ve put people to sleep for a few months before, but they still aged like normal.

[@DrAshishPradhan]

Whatever, I am not going anywhere without this anchor :)

[@JohnMichaelStrubhart2022]

For extrasolar colonization, why not use the movie Interstellar's Plan B. It involved a much smaller population in transit carrying a cargo of a much larger number of frozen embryos with a large genetic diversity. Upon arrival, the original population plus several succeeding generations would host those embryos until the supply was depleted and a resulting genetically diverse population could take it from there. I don't know if the risk would be higher, but the economics of that plan would surely be more feasible.

[@gilbertoresendez37]

I think we just need 100 very kinky people ;)

[@JailanSimon]

I volunteer as tribute ✌🏿

[@zebragaming8844]

thank you Dnews for bringing her back she is one of my favourite hosts on this show

[@SpaceGal]

well thank you!

[@zebragaming8844]

Emily Calandrelli no need you are really good and a natural

[@gavinkemp7920]

the isse with multiple medium ships is you'd need an effective way to exchange population between ships whilst moving at 10% speed of lightto prevent inbreeding. the added complexity might not be worth it.

[@There-Is-No-Virus]

The most important thing with colonising another moon or planet - do.not.use.money. Use Resource Based Economy (basically everything is free). Money messes everything up

[@johnwang9914]

Actually, it's a lot simpler than that, we can have frozen embryos and sperm so a small population could still carry an incredible amount of genetic diversity. The problem is that frozen embryo's and sperm actually have a shelf life because the DNA repair mechanisms are also frozen hence damage from say cosmic rays will accumulate till they could not be repaired but there's a solution to that too, we could digitally record the DNA sequences and simply rebuild them with genome editing methods such as CRISPR. The whole, we need to have a large crew chosen for their DNA is ridiculous and really a result of the remaining cultural undercurrent of beliefs in eugenics and racial superiority. What we need to preserve with a living crew are the cultures, knowledge and skills that could not be codified into texts, and videos. As to the number of individuals needed for genetic diversity, our mitochondria indicates that the human population was reduced to 2,000 to 10,000 mating pairs during the Lake Toba supervolcano explosion 70,000 years ago hence 10,000 is a known upper boundary for the variations that would need to be carried and that's a number easily carried both in frozen embryos and sperms with sufficient radiation shielding or in digital records

[@astrovens]

i love this idea!

[@Fowrkov7]

The ship in the thumbnail looks like the axiom from wall-e but much more fancy and futuristic

[@kamu7803]

what if we were wrong, and the way to find life or other galexis is not to just fly so far far away so u fly out of the milkey way. what if u have to fly into a black hole to fly into other galexis and planets, and every black hole holds it own portal to a galexi.

Flux galexi

[@maverick2377]

Its obvious you don't know how black holes work. You'll be killed if you fly into one

[@Peusterokos1]

Purtal kombat

[@DeLaCruz1987]

Yes because the current state of society is so great, lets share that with another planet :)

[@UtopiaV1]

"Earth 2060: A small group of colonists leave the ravages of Earth for a distant planet orbiting Alpha Centauri's primary star. Their ship, the United Nation's starship "Unity", carries them on their journey to a new world, and a new hope for humankind. Along the way a reactor malfunction damages the Unity, precipitating a crisis among the ship's seven most powerful leaders. As they enter the Alpha Centauri system, the crew splits into seven distinct factions, divided not by nationality, but by ideology, and their vision for the new world. After the ship breaks apart, the seven leaders guide their chosen crew down to the surface of Planet, seeking their destiny beneath an alien sky..." I've got goosebumps.

[@peng2816]

what about sleeper ships, possibly Von Neumann Probes, and a combination of other types of ships that travel slower than light?

[@ragdolltech3526]

There is a hole moral issue, say they get a quarter of the way there, it's been 25 years, and the first generation of children is able to vote (assuming democracy). Do we force them to have the life there parents chose for them by getting on the ship, or would they be allowed to vote to turn back and get back by the time there 40-50 and live the rest of there life on Earth.

[@brianhuss9184]

I doubt a conventional democracy would be viable. I imagine there would have to be arranged marriages as well due to the limited genetic pool.

[@MrWackozacko]

Important issues shouldnt be left to the idiotic masses

[@yeahboi1577]

I just need this chick

[@tonywebster8582]

She'll be right out with the chocolate. Willy Wonka will get her.

[@kuriousitykat]

with advances in genetech inbreeding can be ameliorated/mitigated through intervention via ivf, artificial wombs, gene-splicing/gene-editing etc

[@ASTEROIDALAIN]

the 3 most important elements to agood space travel is gravity of a rotating spaceship like on interstellar. Good Cryogenic systems. Good and advanced populsion system execution.

[@FLBoyCanScrap]

I propose we make Emily the new permanent host of DNews!

[@n3rdbear]

This channel has so many cute girls GODFUCKINGDAMN.

[@Vikas.03]

this reminded me of 'PASSENGERS' such a great movie

[@erdvilla]

Just like a Macross Megaroad-class ship; a big ship at front dragged by an armored and gunned smaller ship (one never knows when big guns might be needed) and several smaller capsule-shaped ships dragged by the big one which contain lakes (water reservoirs), factories and highly efficient farms. If something happens to one it can be isolated and the problem solved or detached in case it is a biohazard or damaged beyond repair or salvage. And there are others assigned to the same role for redundancy. Now we only need fold travel and antigravity engines to put them up in space :p

[@GeorgeCopperfield]

SHE IS SOOO CUTE

[@cabreram.4734]

Haha just what I was thinking 💭

[@michaelj.rockefeller6212]

Just send me there with my crush and I'll get it populated for ya!

[@andrewm9207]

Her and trace are the best hosts. more of them both please.

[@Thelokriz]

This video remembers me a lot to Pandorum, that was the movie about

[@Unpronounceable.]

she's cute

[@Lorkisen]

But what about space ships? Battlestar galactic and stargate have some good designs.Could you do a video on the technology required to make the trip work? Requirements for: power, life support, agriculture, shielding, compensating for gravity, etc?

[@ahsanjaved3135]

Nice presentation and very easy on eye ;)

[@gsg9dfb984]

I will survive with you baby

[@hydrogenone4926]

It would be an interesting trip.

[@wally7071]

I love that we live in a time where this is actually a conversation... go technology! lol

[@arianneghislainerull6418]

I REMEMBER YOUR TED TALK!

[@Rob96778]

A gene bank on your space ship solves the problem of inbreeding. Also, travelers on interstellar journeys of colonization would also want to take animals and plants, too. A case of test tubes is easier to transport than a herd of cattle, so you'd take genetic material for cloning and lots of it. When you arrive at your destination, you clone what you need to have a diverse, healthy breeding population and eat the scrubs. Efficient and tasty, too.

[@theutopianoutopioan464]

In order to make interstellar travel feasable, we'll need much faster propulsion technologies and preferably longer lifespans, if we want the passengers and crew to survive the entire voyage to another solar system. Warp drive might never be feasible, but traveling at 30% the speed of light would get us to the Alpha Centauri system in about 20 years, at 50% light speed, the trip can be made in 8 years. Some propulsion system that allows travel at half the speed of light would let us travel to any solar system up to 40 light years away in up to 80 years. Alternatively, human lifespans could be extended to a few centuries. This would allow ships travelling at speeds of 10% or 20% the speed of light to reach those solar systems at a more leisurely pace and still have the original passengers of the starship to make it to their new star system alive. A suitable starship could make rounds picking people up from and dropping them off to different solar systems. But it raises a question, Would people want to move to a planet after spending decades or centuries aboard a starship? I think some people would want to live on the planets and moons in their new solar system, but other people would prefer life on spacesteads

[@rodneycarpluk8052]

this is very tricky...There is many things to consider when taking this into consideration...such as the size and chemical makeup of the planet...if a biosphere will have to be generated...or if there already is ecosystems on the planet...If the planet is small enough that it would only have a carrying capacity of a hundred million, then a smaller amount of colonists would have to go, otherwise after colonization, the carrying capacity would be reached relatively quickly, and then messy limits on how many kids per coupls would have to be implemented, or the a start of another colony on another planet would have to be undertaken... Also I don't think they should make a trip this lengthy, unless something like a interstellar drive can be made, otherwise the lack of gravity is going to alter the body, less dense bones, muscle mass will drop, amongst other things...unless they can make artificial gravity for the ship...and not those enormous rotating circular sections of a ship, that would compromise travel efficiency..A warp drive might use circular designs, but not at the size of the circler designs they have to make artificial gravity.

[@jimmmas95]

Wouldn't it be more possible if we had a space elevator? (I'm talking about the trasportation of humans in space of cource.)

[@williamnelson1490]

Hell yeah that would be cool

[@jameshansen7108]

Would allopatric speciation occur if this happened? That would be very interesting to know.

[@astrophonix]

A journey to Proxima b wouldn't take hundreds of years by some kind of necessity. I've read of speculative but possible star drives based on known science which use Deuterium/Helium 3 pulse fusion or mini-magnetospheric plasma propulsion which could achieve velocities of 10-20 % lightspeed, making the journey to the nearest extra-solar planet take 25-45 years, so most of those setting off would live to see the mission arrive.

[@SolaceEasy]

Don't forget slowing down time as well, which can nearly double that time.

[@drpravda]

I would just need you & it be all good :D !

[@Alpha_760]

you can just create hibernation pods and the passenger will be woken up by the hibernators pods a few months before we reach the planet this is so reminding me of passengers the movie

[@davidlewis6728]

here is an idea, have the big space ship orbit at the edge of earth's gravitational field, and repeatedly send as much into that ship from earth as needed before letting it fly away. families should be closely monitored, and a sort of landing location should be established/identified on the planet before preparations for the travel, the big ships can have multiple small ships that will be sent to the other planet for evacuation. but, here is another idea, if we had the technology to do any of this, eventually, hopefully, we would learn a bit more about cryogenic sleep... is the whole generation thing necessary then?

[@willb5278]

Need better propulsion? Go back to the 60's, that Orion Nuclear Pulse drive works great outside atmospheres.

[@hannocoetzer8763]

A book of Kim Stanley called Aurora is exactly about how a journey like this would plays out

[@Sophistry0001]

Imagine running maintenance on a star ship over multiple hundreds of years. Assuming you had a fuel source that was compact enough to bring the entire payload with you. Where would you get replacement parts when things break down? Parts and components break and wear down, tools wear down. Maybe 3D printing is the answer but then you'd still need a whole bunch of material of raw stock to print components and tools out of.

[@ThomasSchannel]

Reminds me of the show accession

[@mikestone6078]

Apart from a revolutionary propulsion idea, we also need a solution for the gravity issue. Just a few generations in micro-gravity would render the whole population pretty much incapable of returning to an earth-like planet due to degeneration of muscles and bones. In fact, we even need to find solution for that to really think about colonizing anything beyond earth at all. Otherwise humans living on Mars would be unable to comfortably return to earth.

[@solarwardenv8643]

You would need a very big spaceship to transport everything you needed along your journey too a new solar system including all the people - food - water - ways of creating fresh oxygen all the time & necessaties of life.

[@Robert-ry6xe]

0:01 Light years* 0:41

[@Junokaii]

If you master Genetic Engineering you could program a particular form of molecules in DNA to evolve how you want to over a period of time. For all we know... it could be as simple as finding an oceanic planet with land just sending samples of DNA there.

[@ptmetalgamer]

How about a video explaining the holographic principle in detail?

[@20teamplayer]

I think making a form of human stasis is more feasible than a near light/faster than light travel.

[@Zorro9129]

We need to consider historic examples of colonization. A few hundred colonists would be sufficient to establish a town; by the time they arrive at the planet, terrans would probably have advanced technology to make the trip faster and send additional colonists. There's no need to send the whole lot at once, but launch expeditions piecemeal and let the civilization grow organically.

[@wyrmhand]

Yes, where do I sign up? :-)

[@gordonadams5891]

There are additional concerns, such as radiation and the affect of weightlessness on generations of passengers.

[@kivine]

any idea what's the name of the bgm (background music)?

[@aramiris]

many medium sized ships? they tried that, they were called Khar-Toba transport ships, and it didnt go well

[@xxzenn01xx9]

the biggest hurdle to true space exploration propulsion wise, is figuring out how to cover distances that takes even light a long time to travel.

[@NiX_aKi]

Please keep your head still

[@edwardbrant12]

a topic I think would be cool what would happen if the earths rotation reversed

[@primusro]

People forget that in order to have a sustainable colony you also need to ensure almost the entire industry process, not only the genetic diversity. A simple example is what will they do when they need a sheet of steel to repair something on their planet? They will need the machines, robots and tools to locate new minerals, dig them out, melt and forge them. Same process for anything they will ever need (food, medicine, tools, housing, transport infrastructure, computers, clothes, etc..) So they need to have the necessary equipment to produce almost everything we are currently producing on Earth, which is a shit load of stuff which can't really fit on a spaceship that can carry 50k people.

[@RandomVidz9_]

Before we set out to another planet and. Explore the universe we need to find out a way so the human body can renew or heal itself to live much much longer, a new source of energy instead of thrust like gravitational pull or some shot like that, and off we go

[@Dwkim91]

Wouldn't it be easier then to send a cargo ship of human genetic material that, upon arriving, will be revitalized by the ship? idk, seems like we'd figure out the technology for that before building massive, city sized spaceships.

[@SharkStrikeAC]

3:48 BRAZZERS

[@aviefern]

Where do you get your video thumbnails from?