Alt text: They’re up there with coral islands, lightning, and caterpillars turning into butterflies.
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Our planet is scifi as hell. We’ve got natural magnetic shielding to protect our UV-blocking ozone layer from solar winds. This planet is so damn cozy<3
This planet is so damn cozy<3
Oh! Oh! Let’s wreck it by polluting the hell out of it :3
:(
I wish we wouldn’t
but yummy pollutants! :3
Poison the air and recieve pieces of colored paper in exchange. It’s a good trade
You know it’s too expensive to fix for the people and companies with more wealth than 99.99999% of us, and with the decision maker(s) not valuing any future beyond their expected lifespan, and I don’t think any of them think the previous generation will be the last generation to die
Don’t worry.
They have plans underway to terrorise us with intentionally worsening it under the pretence of trying to mend it, to induce us into obedience under their tyranny, so we don’t rise up against what they’re doing.
Sleep tight.
For now
But is that unusual? That’s just pretty normal, no?
Any planet with a liquid core is bound to have one.
Maybe‽
We don’t have much of a basis for comparison outside of our solar system just yet, but we should have better data soon.
And it being “normal” would just make it more science fictiony. =D
We probably won’t have better data soon. Actually resolving planets directly is incredibly far out of reach. Measuring their core is implausible.
I don’t recall what I was reading, but I once read about a lot of things lined up perfectly for evolution on Earth.
- In Sol’s habitable zone
- Has a moon
- Rotates on tilted axis
- Stable rotation and orbit
- Has magnetic field
- Has Ozone Layer
- Big planet (Jupiter) close enough to catch random asteroids, but not close enough to harm Earth
It’s bonkers that it all worked out that way so that I could be here, right now, reading your post and responding. It really boggles the mind and I don’t want to waste my time.
Welp, guess I’m gonna go look up random curse words in the dictionary. ಠᴗಠ
Look up Douglas Adams’ puddle analogy?
“If you imagine a puddle waking up one morning and thinking, 'This is an interesting world I find myself in — an interesting hole I find myself in — fits me rather neatly, doesn’t it? In fact it fits me staggeringly well, must have been made to have me in it!"
Ah btw, this is the gravitational form (geoid) of earth:
The meters is the height difference of orbit.
Damn, now I get why cartographers and the like always try to make it prettier in post!
Never thought I’d be body shaming the Earth, but here we are 🤷
Lol, but the diff is actually x10000 or something, to make it more visible
That’s just mean! 😉
If the Earth was scaled down to the size of a billiard ball, it would be the smoothest billiard ball in existence.
Except for Howie Mandel’s head, of course.
I’ll take your word for it, because it would be awfully hard to compare it to other billiard balls after we’d asphyxiated from the atmosphere dissipating into space.
This is not to scale. If it was you would see a perfect fucking sphere cause it’s that damn small of an image.
Winter is kinda wild too. The fact that the planet is tilted just enough to make it cold part of the year, but not so cold that it kills everything, and many plants and animals have integrated this into their life cycles.
Evolutionary niche fits the conditions.
And seahorses! Dont forget them!
Can’t forget magnets. How do they work?
Magitech.
Like other elements, just a bit farther reach with their fields. Fun fact, nothing is solid. When you try and touch something, it’s actually just forces against forces. Atoms are primarily made of nothing.
What blows my mind even more, is, contrast to the fact that these tides are from Luna’s pull on Earth, which does not move the barycenter outside earth, the effect of Jupiter on Sol, does pull the barycenter outside Sol! Get your head around that, eh!?!!
The Sol-Jupiter system would have a bary center just 7% outside the surface of Sol. The effect of all the Gas Giants together can either center the syster in Sol’s core or move the barycenter 120% outside Sol.
The really weird thing is that the part of stars outside the core is more like an atmosphere. If the star gets hotter, the parts outside the core can expand. This is happening slowly as Sol’s core fills up with Helium and becomes denser, which fuses Hydrogen faster. So despite weighing less, the Sol-Jupiter barycenter will be engulfed within Sol’s envelope. Once Sol stops fusing Hydrogen in it’s core, the core will shrink and heat up, fusing Hydrogen in a shell around the core, which will cause the envelope to grow and engulf Venus and possibly Earth directly, and definitely contain the full system’s barycenter. After that it will release a bunch of mass in a planetary nebula, which will cause it to shrink a lot, and the remaining planets will probably orbit much farther out, which would throw the barycenter waaaayyyyyy outside of the white dwarf left over.
Some places only get 1 tide a day, some get 2, and some get a weird mix.
Some get 4 high tides in a day. Southampton is weird.
At some point I saw a yt science video saying that the water isn’t moving but the dirt bit is the bit moving during tides
and i don’t understand why the tides on the Right Hand coast are like clockwork and the Left Hand side of the country the tides are like “what time is it IDGF HIGHTIDE”
found it “rotating through the tides”
East and west?
yes.
https://www.youtube.com/watch?v=95gsOrr36II
Sunlight moves in from the East, that’s how I remember. (tried to find a gif, but the video is close enough)
What he’s saying is there is always a bulge of water pointing at the moon (and another pointing away from it) the earth spins so the land sees the bulge coming and retreating as our bit of coast passes under the moon
It’s a bad description because the water also spins with the rest of the world, so though there always is a bulge that is stationary relative to the moon, there is always different water being part of it.
Exoplanets could have tides too though…
Do you think “big enough moon” is going to be similarly rare to “liquid water”? We’re getting better and better at finding planets. Not sure how we’d find their moons though.
It does seem like figuring out their moon situation is still pretty speculative…
Well it’s not near the surface but rather far away in comparison. But also really big a moon.
This NASA page has some really cool simple visualizations of how tides work. They are kind of strange in ways you don’t expect.
https://science.nasa.gov/moon/tides/
Now think about pouring a bucket of water out on a table. It’s easier to slide the water around on the table rather than lift it directly upwards. When the Moon’s gravity pulls at Earth, the water doesn’t float outward, it just gets pushed and squeezed around on the globe, directed by both gravitational pull and other forces, until it ultimately ends up bulging out on the side closest to the Moon and the side farthest away.
I don’t know how to upload gifs to lemmy but check them out on the NASA page they are very satisfying and cool and explain the science wonderfully!
wow that’s pretty cool!
Tidal currents are the least outlandish phenomenon. Most planets have moons and those that do all have tides. Most known ones don’t have oceans and land.
That being said the tides tend to be stronger in e.g. the north sea as opposed to the Mediterranean.
What’s up with the alt text?
It’s xkcd’s alt text or sub-captions; not accessibility alt text.
