The Star - Worldbuilder’s Log 1

[@JontyLevine]

Meanwhile, in another star system... "You _could_ build an inhabited world around a medium sized star, but bear in mind that any planet in a yellow dwarf's habitable zone is going to have to be so far from its host star that it will never be tidally locked, causing it to spin out of control and rush through several hundred day-night cycles in a single year. And the flare cycle would barely be noticeable. We don't know what type of life might evolve around a star like that, but it certainly wouldn't be life as we know it."

[@funnymango571]

my new favorite youtube comment

[@gorpth]

The absence of flares would allow a civilization to wrap their home planet in wires several times over. I tried to think of a believable reason to not do this in my sci-fi world but everything I try just leads to a net of cables covering the planet. Can anyone come up with a way to avoid the meta?

[@peterk7428]

I'm an Earth Science & Physics teacher, and I've been working on developing a unit that incorporates your videos and has students build their own realistic star system and world. This is amazing.

[@themyconid4352]

You win the best teacher of the universe award. It was a unanimous decision.

[@ovrair6340]

you must be their favourite teacher

[@liamscienceguy8153]

Teacher of the week every week

[@spacecakes9367]

Best teacher ever!

[@griffencake8072]

^ These guys are for real ^

[@michaelshields1861]

GOAT over here dropping this MASSIVELY useful spreadsheet like it's nothing.

[@derfalschejunge]

Wanted to say something to the same effect. So, take my like instead to push the message. 👍

[@NinForce]

Ikr 🤯

[@twindiamonds3378]

This is singlehandedly the most exciting moment of my day. Can’t wait for the next episode!

[@bluberrri6905]

Same

[@BelegaerTheGreat]

*Wow your day must suck.*

[@Menorahmaster1]

11:00 Currently studying Astronomy... The reason why it is said that all stars would appear white is due to something known as the Black-Body Curve which, in the case of stars, graphs the peak radiation of the star. It creates a smooth curve that decreases the further away from the peak a certain wavelength (measured in Angstroms) is. Despite all stars peaking in a certain color (for example our sun peaks in a weird pale green color), there is still a massive amount of other wavelengths of light being emitted which the human eye cannot separate so it would appear white as the color white is really how the human eye interprets all/many colors at once. For reference the EM Spectrum (From low energy to high energy) goes... Radio--Microwave--Infrared--ROYGBIV--UV--Xray--Gamma Low mass stars would appear reddish as they would peak in the infrared spectrum (which humans cannot see) but have a sizable amount of radiation coming in the wavelengths we interpret as red. High mass stars peak in UV (Hence why its a bad idea to use high mass stars in your world building), but there is still a substantial amount of blue and violet radiation being emitted, so, to the human eye, it would appear blueish-white.

[@bubblinebee]

Plus (correct me if I'm wrong) don't most high-mass stars have lifespans well under the current age of life on earth (4.5 billion years), meaning that even if life did form under the harsh conditions, it wouldn't last long enough to get interesting? This doesn't really effect colonised worlds, but would certainly dash any chance at UV-tolerant intelligent life.

[@ononen1901]

@@bubblinebee You can always have the life get created or something to avoid this cool time limit. Other than that, the life evolving is a purely statistical matter, so less time means less probable but not impossible, I think. (I mean, life itself is kind of impossible no matter what, so having life there makes it nuts even without bending rules.)

[@quakxy_dukx]

@@ononen1901 adding on to that, the time limits are simply speculation based on the singular piece of sample data we have - earth.

[@Hwelhos]

wow that was really informative, thx

[@Menorahmaster1]

@@bubblinebee Pretty much. Although thats only if we assume that life on Earth is the standard (a standard widely used and for good reason), but as On Onen said, you could have a creator that can bypass those physical limitations.

[@itisALWAYSR.A.]

I'm so excited about the Worldsmith document, I love widgets like this, they take so much anxiety out of the development, hope to see how this works! Great work squad!

[@lordofleviathans8432]

I love spreadsheets and organization so much. Having everything compiled like this makes me so happy in a weird way

[@Astranea]

The document is AWESOME. Wish there also was one for binary systems. Maybe as a Patreon reward?

[@ricdavid]

Right on, fun to see you essentially go back to the beginning with a different style. I hope we see you come back and tweak this in a future video if only to emphasize to newbies that you're not locked in by the decisions you make now, and that ultimately your planet is far more important than the star, so that once you get your planet and calendar how you want them, if they don't mesh 100% with the star, it makes more sense to work backward and edit your star to suit your planet.

[@WhizzKid2012]

newbies are better known as n00bs.

[@AlexArthur94]

BTW: There was a typo in Cell C36 (horizon distance) of the Planet tab so that it referenced density instead of radius. Thought you might want to know. :)

[@Artifexian]

Fixed!

[@niety5914]

Yay! It’s here! I’m really excited for this series

[@nateabels5151]

What's up world building nerds!! This is gold. Thank you so much. Your time off seams to be very well spent. Super excited for this series!

[@ovrair6340]

I love seeing how different creatives do their worldbuilding, all their different methods and processes

[@BelegaerTheGreat]

*The Fantasy community would be a better place if every writer and GM watched Artifexian.*

[@GallowglassAxe]

Hey welcome back! This is amazing and I immediately downloaded the excel file for this. I'm surprise you're not selling this.

[@Artifexian]

I'd much rather go down the voluntary donation route. If people end up using it a lot, I would ask them to consider supporting me on Patreon or buying an item of merchandise. But no biggy if that's not feasible.

[@Signal_Lost.]

@@Artifexian As a poor kid, I can tell you that's how you keep a following. Don't shill out, it's not worth it. If I ever have the money to buy something, I'll snag a T-shirt.

[@osanneart9318]

9:06 you say it's nuts that the universe isn't even old enough for some of the lower mass stars to die, but it's so much more nuts than that: the universe is only three (and a bit) times older than earth itself. The heat death of the universe (or the degenerate era, I forget which is which, tbh) doesn't even happen until a quintillion years after the big bang, which is a billion times a billion. The universe is, relatively speaking, a seconds old baby. From the perspective of a human life time, sure it's insanely bonkers to think that there wasn't enough time for some stars to die yet, but from the perspective of the universe itself... It's still bonkers of course, but for entirely opposite reasons.

[@MrTohawk]

This isn't as long form as I expected. A surprise to be sure but a welcome one.

[@Artifexian]

They'll get longer. Don't worry.

[@sabikikasuko6636]

@@Artifexian may I advice against it? 😅 Honestly they're SO much easier to watch this way, i have to be honest I have a very hard time to watch a 40 minutes long video.

[@pacotaco1246]

@@sabikikasuko6636 i wonder how hard it would be to clip the longer episodes into separate uploads for those of us who are ADD

[@asailijhijr]

@@pacotaco1246 clips of a longer video I've already seen in the same channel as I saw it on, such videos may be detrimental to KZbin's algorithm promoting this channel. (Subscribers who regularly watch whole videos and leave multiple comments won't watch these shorter videos even if heavily recommended.) So that's why so many other long form creators make a second channel for clips.

[@olivedragon6925]

Thank you for creating this series, it will really help me worldbuild my world, Afamalia. :D

[@scurly0792]

Keep us updated

[@SecondEllis]

Oh, I love blackbody emission! Star color isn't as mysterious as it seems if you look at it from first principles. As others have mentioned, the basic output spectrum of a star is governed by the blackbody curve. There are absorption bands in the stellar atmosphere and in the planetary atmosphere but that's not super relevant in the visible spectrum. If you want to know what a 3500 K star looks like, look at a 3500 K incandescent lightbulb filament. Not only is it the exact color, but it's the same brightness too. We see the same amount of light being emitted from the same angular area (handwaving emissivity and the visible-range absorption / scattering by the atmosphere). A 3500 K star is "red" in that the blackbody emission curve peaks ~ 850 nm in the red wavelengths. It's also "red" in that it is a lot redder than the sun. A 7500 K star is "blue" in that its emission peaks ~ 400 nm, blue. It's bluer than the sun. The sun in these terms is "green" in that its emission peaks ~600 nm, green but it's white in that it is the sun and we evolved to define its color as white. Surely any species that evolved on a planet lit by a 3500 K star would define "white" as the color of the primary light source in the world. I'm not arguing we should start calling the sun green, though occasionally people do so when discussing technical points. If you're imagining a person from a sunlike system visiting a world lit by a large, hot, "blue" star or a relatively small (or non-main sequence), cool, "red" star, think about light bulbs. If you buy a "warm" bulb at the hardware store, it'll be labeled as 2000 - 3000 K. The bulb will look white if you stare at it, but the room will look more red. A "cool" bulb is generally one closer to natural sunlight ~ 4000 - 5000 K and "cooler" bulbs > 5000 K (daylight) are harder to find but the room lit by a "cooler" bulb will look more stark or even washed out. Source: astrophysics degree, professional experience

[@bastian9713]

How cool, thank you

[@jursamaj]

Thank you very much. The astronomy student above (Ektor Galan) really butchered this topic.

[@asailijhijr]

So my ex-girlfriend could see the colour of light in a room and disliked some colours because they looked "unnatural". Would (you guess that) she see these whole planets from standing on them as unnatural because of the colour of the light they're illuminated by?

[@SecondEllis]

@@asailijhijr if a room is lit by an incandescent light bulb, and very few are these days, the light will be in the form of a fairly smooth blackbody emission curve. It would be hard to argue that such a room is unnaturally lit (ignoring minor exceptions). Most rooms, however, are lit by various non-thermal light sources. These tend to have spectra that are very different from a smooth, natural curve. Some are kinda close and others are nothing like natural star light. RGB LEDs tuned to "white" are an extreme example of an unnatural spectrum. I'm guessing that if she walks into a room and doesn't like the unnatural lighting, she's probably right. She may be picking up on a particularly unnatural spectrum. Some people are more sensitive to that than others.

[@keiyakins]

dealing with native life, of course, the star's light (as filtered through their atmosphere) will be "white" even at the extremes, because that's what their vision system would evolve to work with. you might get some excellent sunsets though :P

[@Nemo_Anom]

Thank you for making this, and the spreadsheet doc also. I was one of those chaps years ago when you first made these videos, plugging away at the math, creating the universe, galaxy, solar system and planets in my own spread sheet, along to your videos. It's really nice to see everything come full circle. Cheers and kudos, Edgar! I've since moved on to more fantastical settings, but you can bet I'm going to spend a few hours today on the spreadsheet giggling like a schoolgirl.

[@littlebitmoreksp]

babe wake up new Artifexian video

[@yoti2155]

Yes! So excited for the series. A great first episode and hopefully many more to come!

[@Kelewann]

You should also consider "star too old" as something about the age of stars to consider is that stars that are as old as the universe were formed before many supernovae could happen and thus there would be barely any heavy elements in their accretion cloud (so no rocks and no metals), thus not super suitable for life. The best would be to start from 2nd or 3rd generation stars (like ours) to ensure plenty of useable heavy material.

[@5peciesunkn0wn]

Well, that's the age of the *current* universe for us. Nothing says your created universe can't be five times as old as our universe.

[@Kelewann]

@@5peciesunkn0wn I didn't mention anything about the age of the universe used. Whatever the age of your fictional universe, you cannot have rocky planets too early in it's evolution and need to consider that the early stars cannot have worlds with heavy elements like metals.

[@5peciesunkn0wn]

@@Kelewann Aaaah. That's what you meant, fair enough.

[@patrickhackett7881]

And if your planet's molten core totally solidifies (no more magnetic field), or plate tectonics seizes up (less recycling of elements), the planet's habitability would be greatly reduced. That would happen to older planets, especially low mass ones.

[@WesternCivics]

It has arrived!

[@ishmiel21]

So happy you’re back! Awesome video! My only quibble, and it is a minor quibble, is that we don’t really know how long it takes life to evolve. We have an idea of how long it took life to evolve on this planet but we’re not really sure about that even. Put it on another planet in a different environment altogether and we can throw everything we suspect about it out the window. There’s nothing in physics that prohibits life from evolving much faster.

[@SebRomu]

Sample size of one really fudges up things.

[@Hwelhos]

they say that u need as much samples as possible meanwhile they take a sample of 1 and say that life evolves over millions of years ah yes, SiEnSe /jk

[@ishmiel21]

@@Hwelhos As far as evolution on Earth goes, it isn't a simple size of one. We have a pretty big sample size here on Earth, but I don't think that information transfers when we try and apply it to other planets, with totally differnt environments.

[@SebRomu]

@@ishmiel21 How many times has life evolved on Earth? Once = sample size of 1.

[@Nexus-11]

DUDE!!!! I'm so glad I rediscovered your channel! I was super into linguistics a few years back, and I LOVED your videos on all of that stuff! Great video. I'll catch up to the latest in this series eventually. Thanks!

[@caloob_]

For those that don't know, the roman numerals in the stellar classification system shows a star's "luminosity class". Luminosity class 0 or Ia+ is used for hypergiants, class I for supergiants, class II for bright giants, class III for regular giants, class IV for subgiants, class V for main-sequence stars, class sd (or VI) for subdwarfs, and class D (or VII) for white dwarfs. Source: en.wikipedia.org/wiki/Stellar_classification#Luminosity_class

[@xlabc]

A credible worldbuilding calculator. What a bliss

[@austin_alexander1]

I wasn't even able to get one minute into the video! This spreadsheet changes everything! I have never found something like this and I can't wait for more!

[@markoristo]

This is the best thing I’ve seen all day.

[@juliab3326]

I hadn't worked on my stories in a long time until I found your videos. I loved coming up with "unnecessary" details and keeping things realistic and your videos are perfect for that! I've been binge-watching them for the last few weeks. Even though I don´t incorporate everything you mention I enjoy watching them and taking short notes. Just wanted to say thank you

[@henry_alphonse]

I'm so excited for this! I've been dreaming about a proper worldsmith-like tool since I started working on my own setting and this seems perfect! I'm getting excited to start working on it again! Great start to the series :)

[@undwenndumichkusst]

My hype is through the roof right now. I expect great things from this series!! Good luck, Artifexian!

[@grimtheghastly8878]

Return of the king! I'm so excited for this series

[@overestimatedforesight]

I remember watching and using your old videos to construct a prototypical spreadsheet not unlike this. You have created such a stronger, more comprehensive, and more powerful tool than I could have dreamed of. Thank you.

[@LexisLang]

Wow! I was so thrilled when I saw this in by feed and I wasn't disappointed! Superb work as always and I look forwards to the next episode!

[@2tri749]

Nice! Looking forward to seeing this series grow! :)

[@ononen1901]

Thank you for being there for our worlds ❤️🌏🌓☄️ Also, I kind of could not help myself and filled the sheets till the moon creation (had to edit it for two moons, because why not). I had to google it for a while, so for those interested in spoilers, our high tide is something about 0.6 m.

[@leetaeryeo5269]

You have no idea how happy I am to have this worksheet. I've been wanting to build a realistic setting but keep getting overwhelmed with stuff and this breaks it down so nicely

[@ianthefruit113]

One of the reasons i love your work is you set the stage for people building modern age worlds like ours. Every worldbuilding tutorial i find is always for d and d and stuff, not for people who build worlds for fun. Thank you, you have eliminated the need for messy handwriting in half full notebooks, and i thank you dearly for it. You are my messiah, Edgar😁

[@TheTrekkie12]

Edgar I love this spreadsheet! I am very not good at math, so following some of your older videos has been interesting. I’m so glad that this spreadsheet exists.

[@CarlLastname]

OMG an entire new Artifexian series!! (That youtube didn’t notify me about of course) I can’t believe this has gone under the radar! This is so cool!

[@levanera]

I’d been wondering what huge project you’d been working on, but this is huger than I even imagined. Amazing! Thank you for all this hard work

[@theskepticalapple4203]

Looking forward to This. Great to have you back.

[@w4warriors208]

Played around with your spreadsheet! you've developed an invaluable tool, i think the population will be extremely useful. Thank you so much!!!

[@randallwhite8124]

Artifexian out here carrying all my worldbuilding projects. I am so grateful to have this channel as a resource, and will be using The WorldSmith going forward :)

[@theperfectbotsteve4916]

2:42 as one fith of a child I agree

[@АлександрГриханин-р4г]

Wow, what a tremendous work on the worldsmith you've done. It is such an honor to live in the same timeframe as you ). Good luck with your future deeds.

[@Shrooblord]

IT'S TIME! And what a dramatic sound for the intro sequence too... I CAN'T WAIT FOR MORE

[@PloverTechOfficial]

This is amazing, really cool. Never has a spreadsheet been so exciting. I look forward to the next one

[@aharris206]

6:45 Yea, reminds me of Brandon Sanderson's world he created in White Sand

[@aharris206]

One weird upside though, on worlds that are tidally locked to their star, the position of the sun in the sky tells them their exact geographic coordinates (provided they are on the Day-Side)

[@craz2580]

Woooohooooo, HERE IT COMES

[@jf4106]

oh boy, here it comes

[@Francois424]

I did not study Astronomy, officially. But it's been a passion of mine and I've been watching anything I could find on stars and reading wiki pages... You know it paid off when you understand everything on that spreadsheet without explanation (which were really good). My dream star is M-Dwarf. I really want my fictional world to be tidally locked. Yeah, need to be careful not to have an active star (too much flares), unless you have shields like in sci-fi. There's something alluring to having the sun always on the same spot in the sky, winds always coming from same direction, and no seasons... at least to me that's alluring. Also I can put solar panels on the sunny side so infinite electricity. The Black plants would take some time to get used to, but I figure that would be the least of my worries... 🙂

[@pacotaco1246]

The orange Introduction to Modern Astrophysics book by Carol and Ostile is the fairly comprehensive book for beginning astrophysics students. If theres a subject in that book that you eventually want to learn more about, you can find a more specialized book that will let u dive even further!

[@remor698]

A series of science and worldbuilding, as well as a tool to experiment with both for ourselves and both are just freely available to everyone? Sir, you are spoiling us. Looking forward to seeing more of this.

[@skullclutter953]

Super excited for this one! I'm in the middle of trying to build my first world using your videos. I'm definitely going to follow along, checking what I've got so far. Having all the different calculators on one epic spreadsheet is so incredibly generous of you.

[@OrangeZest100]

I nearly burst into tears about The Worldsmith, this is so sweet and helpful!

[@argenteagle7387]

I want to say as someone who has just started a space campaign this is amazing, thank you so much I love your work and can't wait to watch the other videos on this your posting.

[@TheJesterInYellow]

I'm really liking the start of this series, big props to making the worldsmith and making it freely available

[@wispyboy7385]

This is amazing

[@andreazanon5995]

Wow, what a great way to kick off this series. Can't wait for the next episode, I feel like this will be the one project that will crown you as the best worldbuilding channel!

[@liamscienceguy8153]

4:48 yes, they can. We know of several stars north of 200 msols, although they will not have planets in any form and are really more useful as set dressing and are extremely rare 6:15 several low mass stars do not emit flares of any kind. This is highly variable between stars. For example, Teegarden’s Star is the chillest Star ever in terms of flares, is only 12 light-years away, and has a known planet in the habitable zone.

[@gregwochlik9233]

This video just made my day. I pulled that spreadsheet and had a good look at it. I kind of had a peek into the future... Nice!

[@i_teleported_bread7404]

Can't lie, I'm very excited for this series. I can't wait to see how this world pans out as it goes.

[@harryfeng4199]

Just discovered this channel. So excited to binge thru it!

[@GabeHighlander]

ohhhhhhhhh I am so excited to see where this projects goes! and the worldsmith! such a gift

[@matiasorozcoezcurra3971]

YES THE START OF A FUCKING AMAZING JOURNEY

[@MichChats]

This is where the fun begins.

[@haze154]

The world smith is awesome for any world builder out there, great work :)

[@christopherbouget1169]

This is simply amazing. Thank you for all your help.

[@elfinkenshi6437]

Wonderful comeback from a long pause!

[@anonymouse8124]

Can't wait to see where this goes!

[@Hwelhos]

yes finally, thx for the worldsmith btw :D

[@AeroArsz]

So excited :D

[@ingridschmitt4391]

Your videos are always so nice and calming, exactly what I needed just now

[@poiber4268]

OMG this is one of the best world building ideas i have ever seen. thank you so much for making the lib open for all users. however i have a question alpha centauri and the sun are both rated as G2v stars but in the spreadsheet alpha centauries mass of 1.10005 solar masses is rated as a F8v !?

[@saltenzy449]

I saw the title and then went to listen to the Disney Hercules song of the same name. The excitement is real! Also mobile viewer perspective here, not really easy to read everything. May be a good move to be more zoomed in when possible.

[@lewismassie]

A few years back I actually did this manually by going through your planetbuilding videos one by one. Is great to see this

[@trevorjrooney]

My buddy told me about your channel, and holy shit thank you so much. Now I can make civ 6 maps with more clarity on continental drift, glacier recession, and better work on a book world and a dnd campaign.

[@uluscri]

Thank you so much for making this series! It's got so much info in it that's really helped me in my own worldbuilding. I love the Worldsmith! Also, it inspired me to make my own worldbuilding series, so thanks for that!

[@Lord_Constantinople]

That new intro was really nice.

[@kinslowrainer3982]

Thanks for doing this series of videos! I'm really looking forward to them. And thanks for referencing and comparing to our sun and to Earth for those of us who need a little frame of reference and may be a bit slower with the science.

[@shaharwine7793]

That spreadsheet is seriously impressive, you should be proud of yourself. Btw, I am looking forward to seeing this series very much, it's going to be fun!

[@burntbread03]

So looking forward to the rest of this series, love this so far

[@ruddthreesnestedboxes]

This is so cool! Can't wait for the next video!

[@Hemaaatite]

I'm already loving this new series! Great job with the first episode :)

[@marcorubboli9415]

This is so very exciting!

[@unclearsector4266]

So excited for this series!

[@artyoz]

I was pumped to see this pop up in my feed, but when it hit me what the Worldsmith really WAS? I literally put my head on my desk and covered it with my hands, I was so excited. Well done, and well, well worth the wait!

[@codyhodges1968]

Love this series already. Really enjoy the format.

[@Pluiepluie]

That Worldsmith is incredible, thank you so much !

[@jpterry1510]

Dude dropping the spreadsheet for free is wild, thank you so much tho

[@theletters9623]

thank you for helping me continue to procrastinate my actual important to the story lore in favor of fucking around with planets

[@Twidleythegnome]

Niiiice, so happy i saw this, used to watch your videos all the time

[@thirdcoastfirebird]

Awesome work looking forward to more.

[@MrAaaaazzzzz00009999]

i immediately like this style of video, more retro. stands out amidst lots of "overly produced" content out there.

[@davidwadsworth1760]

Awesome stuff! Looking forward to the rest of the series.

[@kriegh94]

Thank you so so so much for the Worldsmith, you're a great person.

[@stickynotemetagaming]

Best thing that has happened this year

[@AlexArthur94]

Thanks for the video, and the spreadsheet! I feel like playing with a speculative evolution project, so this'll be helpful, and fun!

[@rasmussenrambles8576]

Ooooo this is exciting A little note on Kelvin scale and stars. The difference between Celsius and Kelvin is 273 degrees. In most stars that is gobbled up in errors of measurement and rounding errors and other errors as it really isn't that significant. I'm gonna argue that few cares if a star has a temperature of 100 300 K, people will bother correct it to 100 030 C Basically as temperatures go this big, the difference between K and C kinda dissapears