>planet with an axial tilt of 90 degrees
>the equator is cold
Planet with an axial tilt of 90 degrees
Liam Hall
Carson Murphy
days would last half a year, unless the year is very short it'd not be very earthlike. Any life would have to be migratory or hibernate. Enough vegetation to support large animals seems unlikely.
If the year is ~24 hours I guess it'd work. I can't think of any interesting consequences of such a short year, physically. Culturally I suppose they'd have quite a different notion of time. Maybe more emphasis on other celestial bodies for timekeeping.
Robert Long
A culture that puts emphasis on the death like sleep everything enters for half a year would be cool. Like the odinsleep on steroids.
Blake Torres
>Equator is cold
>90 degree tilt
Pick one user. The equator becomes a temperate place on the equinoxes, more of a twilight/dawn at the solstices.
Unless the planet is rotating in such a way that the axis is always perpendicular to the sun, in which case one half is fucking cold.
TL;DR OP doesn't know how to make a planet, tries to deviate from the norm. Fails miserably.
/thread
Michael James
Not only
>threading your own post
But also,
>equator is cold
If the equator is cold then obviously the sun isn't too bright, and the world would have been on the colder side even without the fucked up axis. As it stands lands on the sunny side would be temperate
Christian Ramirez
If the sun isn't bright then the axial tilt shouldn't be the main point of discussion here.
Point still stands that OP is an idiot who doesn't know how planets work.
Isaiah Sanders
Right.
If the planet is both tilted 90 degrees (or near that) and tidally locked, then the equator will be a stable environment and can be "cold", but the dark side of the world will be *much* colder. If the tilt isn't quite 90 degrees the sun will rise and set in a tiny arc on the horizon, but that's the only day-night effect you might get.
A world that is just tidally locked is functionally the same, just without the rapidly changing star field. The sun will always be on the horizon in the same spot, or may wobble a little. The twilight band will likely be the only livable area, and the night side will be cold.
A world that is just tilted over 90 degrees will not have stable biomes at all. The day-night cycle will be shifting much faster than ours does, as each pole goes from full sun to equal cycle to full night, and back to equal cycle and full day over the course of a year. Those living on the equator will see the sun pass overhead in a different arc every day, and will watch it proceed from one pole to the other and back again.
Brayden Watson
The only way to have the equator be the coldest zone is if your planet's poles are both locked toward suns, with a sun over the north pole and another over the south pole.
In the real universe this is extremely unstable and wouldn't happen, or wouldn't last very long even if a freak planetary capture did cause this alignment.
In your world, OP, sure. Go for it.
Caleb Jackson
What if you had a brown dwarf orbiting a larger yellow star and a planet constantly pulled between the two?
Henry Parker
The OTHER only way to do this is with elevation. If by some oddity of plate tectonics the entire equator was Himalayas high compared to seas and lowlands everywhere else, then your equatorial zone would be colder than the subtropical bands to north and south. The poles might still be pretty cold, though.
Adam Wright
Thats not really how gravity works in practice. That equilibrium wouldn't last for any significant amount of time, if it could exist at all.
Mason Wood
If the secondary star is dragging the world back from its normally stable orbital period then two things are likely: 1) the planet is actually leading the second star by a bit so they don't really line up; and 2) the planet is falling toward the primary.
If the planet is technically orbiting the Brown Dwarf very close it could "keep station" between the two stars, but is then probably not in a stable orbit around the dwarf.
All of the scenarios are unstable.
Benjamin Flores
Not that other user, but - how stable are Lagrange points over the long term? Could you have a brown dwarf orbiting a main sequence star, with a planet orbiting the dwarf's L1 point?
Colton Kelly
it could sit their stably enough. But it wouldn't be tidally locked to the stars, since its not directly orbiting either of them but the L1 point itself
Slight autism point, but you don't want a brown dwarf as the small star. Brown dwarfs don't emit light, they're failes stars that didn't quite get enough mass to start fusion. You'll want a red dwarf.
Lucas Peterson
>ITT: Veeky Forums yet again proves that it's full of ignorance
Haha! Check out arxiv.org
Matthew Gutierrez
Some Lagrange Points are more stable than others, and something the size of a planet may have trouble staying in one.
Jaxon Clark
Better idea:
The planet is a donut and the sun Bob's up and down in the middle.
The innermost region would see the sun move from one horizon to the other, then back again.
The outermost region would see one horizon glow every 12 hours.
The top and bottom regions would be temperate. The sun rises into the sky, slows down, then sets again. Due to these two temperate regions being separated by two very inhospitable regions they wouldn't have much contact with one another.
The world map would be rectangular with almost no distortion. Move off one edge and you arrive at the opposite edge.
Jose Gutierrez
As an average, perhaps, but the seasonal variations would be higher, with the dark pole of the moment getting much colder than the always illuminated (to *some* degree) equator. The summer cook will more than compensate when looking at the annual average if that graph is correct, but the journey to that average will be unpleasant.
The temperature co-efficient listed down the right side suggests that there are some assumptions in place like length of year and atmospheric density, both of which should affect the magnitude of the seasonal swings and thus the annual averages.
Gavin Hernandez
Ah, someone's played final fantasy.
Charles Harris
there would always be a side colder than the Ecuador, the only kinda stable scenario I can think of is if the planet is in an area with a high star density so the "night" side gets enough light to be a functional day, so the Ecuador is the place that receives the less light overall, but how many and how big would have to be stars nearby to get that? Your planet would have to be near the galaxy center, which is a dangerous place for a civilization as it is
Isaiah Lee
Life may adapt. Once, Antarctica had boreal forest almost down to the pole (apparently down to the 85 deg latitude), populated by large fauna including cryolophosaurus. This is fascinating to me because no such environment exists today.
Jack Kelly
wait, what about a regular axis, but the planet has a ring system which makes the ecuador a lot coolder than the poles, the sunlight would never reach the surface in there
Joshua Gomez
Yeah, but the point is that the equatorial region wouldnt be a band of ice, it would have blighted poles.
Dominic Foster
The Earth can get a heck of a lot hotter than most people realize. We're living in an Ice Age right now. There are periods of time when there was no ice on the planet.
Ian Bell
I think I'd die in a world like that. Where I live would become impenetrable jungle.
Grayson Powell
Wouldn't the equator always be warm no matter how you're rotating unless only half the planet is always cold all the time?
Jacob Watson
>Living in an "Ice Age"
>Literally the smallest amount of polar ice in 25 MILLION years
Brandon Cooper
What about
>planet has a elliptic orbit
>years are very long, longer than your average life span
>at it's furthest point the orbit takes the planet to the edge of the star's habitable zone and temperatures on the surface drop to extreme levels
>the population must hide underground during this time
Blake Davis
>no such environment exists today
Boreal forest exists in russia and canada.
Ryan Ross
Where'd you find such a shitty graph?
The literal definition of an "Ice Age" is a period of time where polar glaciers exist. Until the last bit of ice melts in Antarctica, we're still in the tail end of an ice age.
We'll likely lose the rest of the Arctic ice within our lifetime (some will refreeze during winters, but the sea will be fully liquid during summer). Antarctic glaciers will probably be around for a few hundred years despite humanity's best efforts.
Angel Cruz
But mankind evolved in that Ice Age. To exist in a time period warmer than this would spell the extinction of our species and the collapse of our civilization. Implying that the Earth can get warmer and it woudln't be armageddon is disingenuous.
Cameron Barnes
>To exist in a time period warmer than this would spell the extinction of our species
This isn't true though.
Leo Myers
Holy fuck, hibernating humans. That'd be pretty great as a setting.
Andrew Scott
>But mankind evolved in that Ice Age. To exist in a time period warmer than this would spell the extinction of our species
Mankind was on the edge of extinction during the Ice Age. Were it not for the warmth of this inter-glacial period, we would be wiped out.
What reason would you have to believe that mankind would become extinct the warmer it gets? It's the exact opposite. If we plunge into the Ice Age proper again, we're dead meat.
Owen Thompson
Humans can live in jungles and savannahs. We evolved in a place that'd basically be the temperate zone's climate once all the ice melts. The bigger problem with the ice melting is more the floods, as far as death toll goes.
But even outside that, the largest problem is that such an environment is utter fucking miserable hell. Look at Africa today. It's fucking awful. All those parasites and pests would migrate north and make our lives miserable, not to forget the horrid suffering from the heat itself, survivable or not. Imagine the middle of August all fucking year long.
Oliver Russell
Collapse of civilization? Sure. Mass extinction of 50% or even 90% of animal and plant species? Definitely. But keep in mind that extinctions often mean that other species move to fill-in gaps (grasslands replacing forests).
Human extinction seems a bit far-fetched. Even with a 5 or 10 degree increase, there will still be habitable zones on Earth. Humans have an extremely wide diet, and are able to survive in almost any climate. As long as other terrestrial plants and animals are able to survive, humans will likely stick around.
Matthew Thompson
>a world where days take years
>civilizations migrate in circles following the sunlight
>”empty cities” are left behind to brave the winter until the quasi-nomads return
>have a campaign where the party is left behind and trapped in the perma-night
Stealing the fuck out of this
Owen Bailey
Back then, we didn't have much technology beyond primitive tools. A proper ice age would cause a massive death toll, but due to technologies like nuclear power, which are pretty independent of climate, we could sustain our own little biospheres. Even more so when the equator remains inhabitable.
Aiden Powell
>collapse of our civilization
>implying it's not a long time coming
I want post-apocalyptic Medieval Age NOW!
Dylan Kelly
You won't live to see that era.
Parker Morgan
>The Long Sleep has many dangers. While most creatures hibernate during the Dark Season, predators do exist, and a sleeping human is no match for the creatures of the night.
>Human cultures can broadly be separated into two groups: the Deephold and the Nightwatch.
>The Deephold cultures build crypt-like fortresses called "Holds" to sleep through the Dark Season. They go to great lengths to fortify their Holds, as they must be completely impenetrable from the outside.
>Some Deephold cultures build large heavily-fortified communal Holds, walled-in with heavy stones that take weeks to build, and weeks to open again in the Spring.
>Distributed Holds are more common than communal Holds. Each family has their own small Hold that is passed-down and fortified over generations. While communal Holds are large, obvious structures, family Holds are often small and very well-hidden. Individually, they are less secure than a communal Hold. But their distributed nature ensures that a village is able to survive and carry-on even if one or two of the Holds are breached during the Dark Season.
>The Nightwatch cultures do build fortified dwellings for the Long Sleep, but they are not fully sealed like a true Hold. Instead, they rely on Nightwatchers to guard the sleeping humans.
>The Nightwatch cultures essentially sleep in shifts during the Dark Season. Each watch shift lasts for a month, and at the end of the shift, the Nightwatchers will rouse the next group before re-entering hibernation. Approximately 10% of the population is awake at any given time of night.
>All able-bodied adults are required to join the Nightwatch. Around half of a Nightwatch shift is dedicated to patrols, while the other half of the shift comprises various support roles (cooking, cleaning, maintenance, medical treatment, etc.).
It would also be cool to have the hibernating cultures interact or conflict with nomadic cultures.
Owen Sullivan
how would you hibernate human?
magic? with an emphasis for realistic seasonal system you can't just hand wave realistic limitations of human body
Alexander King
The first Heliconia book by Aldiss, Silverberg's "Eden" books, Williams' Pelbar cycle, and a few others deal with humans or near humans in or emerging from ice ages.
Jose Myers
Oh fuck off, user. It's a cool idea.
I can imagine being a kid in this world. Going to sleep and waking up inches taller.
Samuel Morgan
People probably wouldn't grow during hibernation. Your metabolism would be trying to slow down, not work extra shifts.
Jackson Rogers
thats basically GoTs Winter, but more predictable.
Eli Rivera
Anthony Davis
There is another way, but it requires subtely. And mountains.
Imagine a tidally locked world, with a continent along a great part of the equator but even more oceanic area that earth. The sea currents can redistribute the heat, keeping the oceans at a "temperate" temperature, while the landmass would have not such benefits and freeze over.
This can maybe even work in a planet that merely has a very large axial tilt, although in both cases the wind currents and seasons would be brutal in extreme.
Basically, think of island himalaya surrounded by a mega-ocean.
David Jenkins
Ah, but too much beachfront property tends to regulate land temperatures as well. You need mountains, as you suggest and explains.
Carter Thomas
Yeah, I forgot to draw those. Island himalaya could work, island florida not so much.
Nolan King
you fuckin idiots don't get it, do you?
It's an ice sun.
Wyatt Campbell
the tilt determines the harshness of the seasons, OP. no tilt means there is only one season.
James Smith
Okay so let's go through this physically:
With a 90º axial tilt the equator would still be the hottest part of the planet for most of the year, with the only except being the 2-4 months that one or the other pole is in constant sunlight.
At the equator there'd be, at most, a few days of perpetual night/day each year, at the equinoxes, during which it'd get a bit chill, maybe france or southern europe cold. The further north/south you went the equinoxial day/night would grow, causing temperatures to fluctuate between arctic temperatures during one equinox and hotter than any point of the earth can currently heat up to during the other.
Another side effect of this is that wind patterns would change remarkably during the course of a year - during much of the year there'd be steady westerlies and trade winds much like earth's, but every six months these wind would go through a pattern of increasing in intensity then dying down again before you basically got a ridiculously strong set of incredibly hot winds from the pole facing the sun towards the night side of the planet, possibly with a ginormous, say force 10 hurricane (assuming hurricane force ratings are logarithmic) forming directly on the poles during the build up to the equinox, which would then meander towards the equator shortly after the equinox has pass.
All winds would blow toward the cold side of the planet, so if you're a sailor on the hot side, you can always move towards the cold side, but once at the cold pole, you're stuck until the trade winds return.
Luis Evans
What about a system where the sun and the planets all stably orbit a black hole? What kind of effect would that have on the planet? At some points the sun would be much closer to the planet and at others it will be behind a black hole.
Lincoln Green
The problem is that the foodstuffs that support our fucking enormous population rely upon temperatures and climates that will no longer exist.
Like where do you think the enormous food production of the Great Plains is going to go once those same areas are a fucking desert? Canada sure doesn't have that same enormous grassland.
We already draw more water than is sustainable from the oolongola aquifer and numerous rivers out west go dry before they get to the ocean because we use so much water.
Brandon Richardson
orionsarm.com
It's a planet from the Orion's Arm setting. Figures.
Logan Nguyen
orionsarm.com
Here's another.
David Thomas
Fantasy, user. Remember it's not real.
Landon Morgan
A guy did that
Someone wrote a book saying europe got ahead of africa and america because of ecological reasons not because of culture or etc... developed there.
This guy decided to test this idea, trying to create the widest east west zone
Andrew Perez
>emerge from the ground every 17 years only to be crushed by superior elves
Parker Nelson
Rotated the whole map around New Zealand, from the looks of it.