New simulation reveals alternative explanation for the moon's formation
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- Опубліковано 3 жов 2022
- A new simulation reveals an alternative explanation for the moon's formation. The moon is thought to have formed following a collision between Earth and a Mars-sized object, called Theia. But now Jacob Kegerreis at Durham University’s Institute for Computational Cosmology and his colleagues have used the most detailed supercomputer simulations yet to model impact scenarios of the colliding bodies, with varying parameters including angle, speed and spin. These simulations show a giant impact immediately placing a moon-like body into orbit around Earth, as opposed to previous models that show the moon forming by gradual accumulation of debris from Earth's impact with Theia. "This opens up a whole new range of possible starting places for the moon’s evolution,” says Kegerreis.
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For more on this story: www.newscientist.com/article/2312070-moon-mystery-could-be-solved-by-simulation-of-planetary-smash-up/
Two planets smashed and the moon's their baby
We have two moons, the earth had twins!
@@dag410 Are you referring to the asteroid that fell into orbit around the moon? AFAIK, it has since spun off into space as its orbit was unstable. According to Nature, "Earth once had two moons, which merged in a slow-motion collision that took several hours to complete, researchers propose in Nature today. Both satellites would have formed from debris that was ejected when a Mars-size protoplanet smacked into Earth late in its formation period."
@@Zymurgest I seen years ago a small rock, maybe an asteroid, was in a looping orbit in our wake, orbiting around our path through space, but not orbiting like the moon.
@@dag410 They're called the Apollo asteroids. They all share one thing in common, that being that they intersect earth's orbit. So far we've been lucky dodging those bullets! But earth's gravitational well extends for a million miles in all directions, enough to alter asteroids like Apophis. There are also dozens of asteroids big enough to destroy a city, and make for a bad hair day for everyone.
Hardly news, but interesting nonetheless. In 1974, Hartmann and Davis proposed what became known as the Giant Impact Theory. This later was referred to as the "Theia theory", and almost explained how the moon formed, its composition, orbit, and inclination. Still needs more research however, but missions to the moon may reveal new information on its formation, and evolution.
The part where a moon formed in hours not millions of years?
@@starbird14 As crazy as it may sound, that's where the evidence seems to be leading us. Even the Columbia gorge was cut out, and formed the badlands in a matter of hours. Took days for the water to subside however. Cataclysms, while rare, do indeed happen, and we're left to fit the pieces back together again to tell the story. This is why the moon has Mares on one side, and craters on the other. Otherwise, we'd have rings, just like Jupiter, Saturn, Uranus, and Neptune.
@@starbird14 More like thousands of years.
I thought this was the main theory lol
This proposes it was much quicker than the original theory
Apparently, this alternative one adds a subtle twist; instead of the debris from the collision gradually coalescing to form the Moon in orbit around the Earth, the Moon formed almost instantly from the collision.
@@JacekNasiadek which suggests we should mine the moon perhaps?
Nice animation, but that is what we were told 20 years ago in school. Dunno why this should be new.
@@Rok.. It's not, just very similar. This one's *much* faster
I presume this suggests that the moon's interior is less well sorted than if it had slowly accumulated?
Indeed! It also seems to be riddled with caves, just as in the Earth. Perhaps there may even be life present in them, but it would be deep in the sublunarian crust.
@@ZymurgestReminds me of that extremely scientifically accurate movie moonfall
@@1.4142 MST3K would have a field day with that one, that's for sure! As long as you don't think too much about it, Halle Berry *did* turn in a pretty good performance, despite the terrible writing, directing, and plot/story line. Good to see that "B" movies are still being made! Did you hear that a remake is being planned for "Plan 9 From Outer Space"? Supposed to be based on the actual book, which was written well. It was just the production of the movie that sucked. Even Bela Lugosi couldn't help, which is most likely why he died in mid production ;^)
No survivors
Isn't this why we have water? Seems like Mars surface is much older, water probably just went deep after the mantle cooled and made deeper crust, while we have magma, still hot, and a shallow crust, not allowing for the water to do anything but pool into liquid oceans
All water on bodies in the Solar System comes 99.99% from volcanism … a bi-product from the liquefaction process of rocks during magma recycling. Hope this helps.
There's more water in the crust than there is in all the world's oceans combined! This water is trapped, and is believed to be the cause, and reason behind subduction zones, and earthquakes. So as rising levels of seawater occur, there should be an increase in earthquake activity.
The reason we have water is because of early/late heavy bombardment. Icy asteroids and comets were fueling the earth with water
Correct me if I'm wrong
Hit moon 0:48 (But is 1 moon in name Luna 0:50
❤️👍
And the great bombardment period could have came from this collision?
Probably the reverse situation occurred IMHO.
nope, it was later when jupiter was unhappy about its spot and wanted a better spot
@@vkobevk Lol, by Jupe, I think you got it!
@@vkobevk I have know of this guess for years, just wondering if it has changed any
@@dag410 no, great bombardment are from asteroid or icy comet from outer solar system
it only take less of 100 years for earth and theia debris to fall back to earth or form moon or spread in deep space
great bombardement is several dozen million years after moon created
What's all that liquid
rock im pretty sure, just in a very large quantity
When I consider thy heavens, the work of thy fingers, The moon and the stars, which thou hast ordained; What is man, that thou art mindful of him? And the son of man, that thou visitest him?
Psalm 8:3-4 KJV
Correct. All things were made by Him and for Him.
Nope. Created by a creator.
It’s very cool looking but the world that I live on is solid matter
It wasn't 4.5 billion years ago
@@Jabroni686 There is literally no way they could possibly have any idea if that is actually true or not. This is just as likely as the Christians creation theory or the turtles all the way down theory. They make these huge leaps and guesses based on incredibly limited information. Why not get more information before you create theories you know what I mean?
The theories on solar formation, and planetary construction are based on three basic assumptions. One of which was the aggregation theory (aka “The core accretion theory”). The other was planetary disk theory (“The disk instability theory”). And the last was the pebble accretion theory. All of which have very little supportive evidence, yet we do see these events happening around us in other star systems, so it's by logical extension mostly.
@@Tick421 you know your solid matter float on a magma ocean ? and than when lava turn cold it become rock and than you can melt metal into lava ?
@@vkobevk more cool theories and I enjoy those.