Iapetus does not have two contrasting sides because of some ancient collision. The true explanation for the different sides is actually far more fascinating. So to explain why it has a dark side and a light side I have to go on a seemingly unrelated tangent. You see Saturn has another moon called Phoebe. Phoebe is a retrograde moon meaning it orbits the opposite direction of the planets spin (and Iapetus' orbit. It has a radius of 106 Kilometers making it rather large for a moon of its type (Phoebe also has a low albedo meaning it looks incredibly dark). And you see Phoebe is constantly getting smashed into by micro-meteorites and even by other small objects in orbit around Saturn. Because the gravity on Phoebe is so weak these impacts kick up material that goes into orbit around Saturn. This material has over time formed a sort of ring of material called "The Phoebe Ring". This ring is invisible to the naked eye but has been imaged with infrared. Now, scientists have done calculations on the ring material and have discovered that material larger than 3 centimeters across will stay in place in the ring, but material smaller than that will spiral inward. And what large moon is just waiting to sweep up that material, material that happens to be much darker than the surfaces of any other moons? Iapetus! Iapetus is the furthest out of the large Saturnian moons so it's in a perfect spot to sweep up the material. As a result the material from the Phoebe ring sort of rains down on the leading hemisphere of Iapetus (AKA THE DARK SIDE) and it causes the surface to darken, the darker surface absorbs more sunlight and so the ice there sublimates and it darkens some more and the ice sublimates even more and it causes a "Run Away Darkening Effect" that has turned the leading hemisphere dark as night. And because the trailing hemisphere doesn't run into any of the Phoebe ring material it has nothing to cause it to darken and so it stays white as snow. And that how you get the Yin-Yang surface of Iapetus! There you go! That's the explanation! Two seemingly unrelated phenomena that actually are related to each other! I honestly think this is a much cooler explanation than some ancient collision anyway! (:
If gravity is less than one-fortieth the amount of gravity on the surface of the Earth, then you would not need to walk up a mountain on Iapetus. You could reach the top through a series of very long jumps! And if you tripped and fell, the falling motion would be in slow-motion, compared to on Earth, and the force of impact would be negligible. The exception would be if you happened to fall into a deep chasm. In that case, though accelerating slowly, you would ultimately achieve a sufficient velocity to cause real damage or death. But the entire fall might last minutes, rather than seconds, so you'd have a bit of time to come up with a plan to save yourself. Perhaps you could call a nearby astronaut to assist you, or maybe activate your jetpack! There is another effect to keep in mind. Since the surface of Iapetus has no atmosphere, falling objects have no terminal velocity. They just keep accelerating at a slow rate until the fall is stopped by an impact, or a countervailing force.
OK, I'm really into this now! The force of gravity on Iapetus is equal to .223 m/s², per a Google search. If we plug this number into the ke!san online calculator, located at URL keisan.casio.com/exec/system/1224835316, it would require an object on Iapetus seven minutes (420 seconds) to fall ~20,000 meters, which is the height of the highest mountain on Iapetus, and the freefall velocity would be 337 km/hour, or approximately 200 MPH. Even if an astronaut weighed four or five pounds on Iapetus, that velocity would very likely be fatal. However, if the astronaut only fell for 30 seconds, his or her freefall velocity would be about fifteen miles, per hour, which might damage the joints, assuming you landed feet-first, but you would likely survive with a great story to regale humans back on Earth!
And back to that scenario of jumping one's way up a mountain on Iapetus. I could not find an exact match, but "Cosmos: The Infographic Book of Space," located at URL cosmos-book.github.io/high-jump/index.html, estimates a 60-foot vertical jump is probable for a human on Ceres, which has a surface gravity slightly higher than the surface gravity on Iapetus. Let us say that a human could jump about seventy feet high on Iapetus, if jumping straight up. If jumping forward, my swag calculator says a person could jump about four times that distance, or cover a horizontal distance of nearly 300 feet, per jump, begun while standing still! If you have a better or more accurate way to come up with this number, please post a reply here.
Those mountains are insane. Iapetus looks like it was unable to pull itself back together into a sphere after a major collision (at least that would be my guess)
Miranda is exactly what I was thinking (Personally I think Miranda deserves more love for being so cool) but I imagine there are many other ways to explain Iapetus.
No it's an ancient mega structure, a space station, that hemispheric line is as artificial as the whole damn thing. It's honeycombed with spaces, for habitation.
The dark material on Iapetus is from the Phoebe ring. Saturn's moon Phoebe releases dust as it orbits and forms a ring. Iapetus orbits through the ring and the dust gets on the surface thus creating the dark surface.
The massive mountain ridge almost looks centrifugally formed, if it coincides with the equator then perhaps it rotates super fast? Or maybe if the ridge doesn't coincide with the equator and/or the spin rate is low, perhaps it previously did until it was disturbed by a huge impact, explaining the stark contrast between both sides?
The leading side of Iapetus in its orbit is the dark side. It's quite likely that a dark material from another moon may have settled there. It's also hypothesized that the mountain chain is the result of a ring around Iapetus that settled down on the surface, as it is on the equator. Great video, as always!
Dreksler I know you made a video about what will happen if Earth became half of it's size. I would like to know what will happen if the sun became half it's size. Do you know what would happen if the sun became half of it's size?
Higtex 98 maybe everything on Earth would freeze if sun became half it's size.I also like to know will the planet Venus freeze if the sun became half of it's size?
Have a look at my channel for another video about Iapetus. I have also written a free-to-download book called "Secrets in the Solar System" which has a chapter about Iapetus.
Perhaps Iapetus' largest crater is the collision point between it and a celestial body perhaps made of ice, that of whatever material(s) were floating around that region of space. Then, the ice shattered and the chunks went flying above Iapetus, later to be pulled down and consolidated by gravity into splatter marks
The geological diversity found among the many moons in each of the gas giants in our solar system is simply startling. And yet, we are not even able to imagine for a moment the mind-boggling, strange geological formations we would find on the rest of trillions of planets and moons orbiting stars within our Milky Way, and beyond.
It depends on Iapetus orbit to determine how is it that far from Saturn and still remain locked. And yes, it's so needed to send robotic probes for a more specific analysis and study of much ignored Iapetus!!
One of the Crispiest & HD photo / picture of the mysterious Saturn's moon >>> Lapetus! ( Pronounced Lay~Pe~Tus ) .Thank You So Much Dreksler Astral! 🕯🌷🌿🌍💖
These are the major moons in the solar system: Mercury - no moons Venus - no moons Earth - moon Mars - Deimos, Phobos. Jupiter - Io, Callisto, Europa, Ganymede. Saturn - Iapetus, Enceladus, Titan, Mimas, Rhea, Tethys. Uranus - Oberon, Ariel, Titania, Umbriel, Miranda. Neptune - Triton, Proteus. Earth, and Uranus are my favorite planets in the solar system. Earth is my favorite planet because it has amazing biodiversity, it is our home planet, and it has beautiful scenery. Uranus is also my favorite planet because it was discovered before Antarctica.
*No Atmosphere? I'm Sad!* I've always wanted to fly, just by flapping my arms•😢 *Wait a Minute?•🤔* I'm Sad, because there's a snowball's chance in Hell, I could even get there!•😕
Each planet, each moon of our solar system has its own unique story to tell. Fascinating!
Here's a few examples.
Io: Land here and you'll be incinerated.
Callisto: NYOOOOOM goes the asteroid.
Pluto, Eris, Ganymede, Io, Charon? Are they interesting?
@@titan9259 yes
Even the moon
@@titan9259 yes
"That's no moon, it's a space station."
ur talkin bout mimas then instead of me
Take a drink if you see this in the comments section.
Chug-a-lug if no one in the entire comments section posts this line.
Your videos are sometimes so amazing that they give me brain freeze and put me in an existential crisis mode!
our brains are evolutionary designed that way so we could make more offspring so don't worry it's just an non needed instinct .
VikramJeet Das that is funny
Iapetus does not have two contrasting sides because of some ancient collision.
The true explanation for the different sides is actually far more fascinating.
So to explain why it has a dark side and a light side I have to go on a seemingly unrelated tangent. You see Saturn has another moon called Phoebe. Phoebe is a retrograde moon meaning it orbits the opposite direction of the planets spin (and Iapetus' orbit. It has a radius of 106 Kilometers making it rather large for a moon of its type (Phoebe also has a low albedo meaning it looks incredibly dark). And you see Phoebe is constantly getting smashed into by micro-meteorites and even by other small objects in orbit around Saturn. Because the gravity on Phoebe is so weak these impacts kick up material that goes into orbit around Saturn.
This material has over time formed a sort of ring of material called "The Phoebe Ring". This ring is invisible to the naked eye but has been imaged with infrared. Now, scientists have done calculations on the ring material and have discovered that material larger than 3 centimeters across will stay in place in the ring, but material smaller than that will spiral inward.
And what large moon is just waiting to sweep up that material, material that happens to be much darker than the surfaces of any other moons? Iapetus! Iapetus is the furthest out of the large Saturnian moons so it's in a perfect spot to sweep up the material. As a result the material from the Phoebe ring sort of rains down on the leading hemisphere of Iapetus (AKA THE DARK SIDE) and it causes the surface to darken, the darker surface absorbs more sunlight and so the ice there sublimates and it darkens some more and the ice sublimates even more and it causes a "Run Away Darkening Effect" that has turned the leading hemisphere dark as night. And because the trailing hemisphere doesn't run into any of the Phoebe ring material it has nothing to cause it to darken and so it stays white as snow. And that how you get the Yin-Yang surface of Iapetus!
There you go! That's the explanation! Two seemingly unrelated phenomena that actually are related to each other! I honestly think this is a much cooler explanation than some ancient collision anyway! (:
Welp, thanks for the explanation. And i would like to have an Iapetus vacuum cleaner, if only Saturn didn't wan't to let Iapetus go... xD
Thank you for this information!
Then its not bound to collect on a Single Angle. Making a Ring.
Since the collection could happen on any angle.
Thx for information and i see because you worked a lot
Halo CE Magnum The Best Magnum in Halo.
If gravity is less than one-fortieth the amount of gravity on the surface of the Earth, then you would not need to walk up a mountain on Iapetus. You could reach the top through a series of very long jumps!
And if you tripped and fell, the falling motion would be in slow-motion, compared to on Earth, and the force of impact would be negligible. The exception would be if you happened to fall into a deep chasm. In that case, though accelerating slowly, you would ultimately achieve a sufficient velocity to cause real damage or death. But the entire fall might last minutes, rather than seconds, so you'd have a bit of time to come up with a plan to save yourself. Perhaps you could call a nearby astronaut to assist you, or maybe activate your jetpack!
There is another effect to keep in mind. Since the surface of Iapetus has no atmosphere, falling objects have no terminal velocity. They just keep accelerating at a slow rate until the fall is stopped by an impact, or a countervailing force.
OK, I'm really into this now!
The force of gravity on Iapetus is equal to .223 m/s², per a Google search. If we plug this number into the ke!san online calculator, located at URL keisan.casio.com/exec/system/1224835316, it would require an object on Iapetus seven minutes (420 seconds) to fall ~20,000 meters, which is the height of the highest mountain on Iapetus, and the freefall velocity would be 337 km/hour, or approximately 200 MPH. Even if an astronaut weighed four or five pounds on Iapetus, that velocity would very likely be fatal.
However, if the astronaut only fell for 30 seconds, his or her freefall velocity would be about fifteen miles, per hour, which might damage the joints, assuming you landed feet-first, but you would likely survive with a great story to regale humans back on Earth!
And back to that scenario of jumping one's way up a mountain on Iapetus. I could not find an exact match, but "Cosmos: The Infographic Book of Space," located at URL cosmos-book.github.io/high-jump/index.html, estimates a 60-foot vertical jump is probable for a human on Ceres, which has a surface gravity slightly higher than the surface gravity on Iapetus. Let us say that a human could jump about seventy feet high on Iapetus, if jumping straight up. If jumping forward, my swag calculator says a person could jump about four times that distance, or cover a horizontal distance of nearly 300 feet, per jump, begun while standing still!
If you have a better or more accurate way to come up with this number, please post a reply here.
oseggene these are some really interesting information here! I aspire to be as smart as you someday
oseggene presented well, too
Fantastic, thank you for sharing. What wonderful imagery you gave us.
This guy is brilliant
Those mountains are insane. Iapetus looks like it was unable to pull itself back together into a sphere after a major collision (at least that would be my guess)
The same as Miranda? Would seem interesting, though.
Miranda is exactly what I was thinking (Personally I think Miranda deserves more love for being so cool) but I imagine there are many other ways to explain Iapetus.
EdMcStinko Or maybe it had a moonlet, which desintegrated into a ring and then made the Equatorial Ridge?
thought it was a big ol walnut
No it's an ancient mega structure, a space station, that hemispheric line is as artificial as the whole damn thing. It's honeycombed with spaces, for habitation.
The dark material on Iapetus is from the Phoebe ring. Saturn's moon Phoebe releases dust as it orbits and forms a ring. Iapetus orbits through the ring and the dust gets on the surface thus creating the dark surface.
How would it feel to skydive into the clouds of saturn?
First Name Last Name fire. You wont come back out yet fall further in. You get compressed to the size ofva potsto. The end.
Vincent Smit size of a what? lmao
Size ofva potsto
I laughed in real life. This is the first time a typo made me actually laugh
Skydiving into Venus would be fun, yet boring.
I'm so glad I found your channel, i've already seen all your videos in one day, thank you
You make great videos! I've watched all of them, and every one is so interesting and well made!
Iapetus is my favoruite
moon of saturn! It's just beautiful and mysterious.
Holy shit this is such a good channel
Im loving your videos man..... keep it up
One of the Best videos i have ever watched on CZcams
.
That's pretty bizarre and fascinating.
P. S: You are my favourite scientific CZcamsr, Dreksler!
Iapetus......what a beautiful name....only Greeks can give name to Universe......
Do a video if every planet in the solar system was in the habitable zone orbiting the sun like a belt!
The gravitational pull would fuck up the orbits. There would be no atmosphere on Earth, and we would die.
bluemeannie Too much citranium. Please stop drinking it so you can turn blue again.
that mountain range looks like a long scar, like the one on my head from when I got stitches
The massive mountain ridge almost looks centrifugally formed, if it coincides with the equator then perhaps it rotates super fast?
Or maybe if the ridge doesn't coincide with the equator and/or the spin rate is low, perhaps it previously did until it was disturbed by a huge impact, explaining the stark contrast between both sides?
Lapetus status
Rank:moon
Distance:1,168,464 miles
Temputare: -143C
Gravity:0.223
Size:240.768 miles.
ElementOP it’s iapitus
I mean iapetus
honestly speaking, I've got some voice issue. and, you are my inspiration.
thank you. and keep up the good work.
I love your accent, I can't place it, but if your native language isn't English, then congrats on speaking it so well.
nunya bisnass serbian !
nunya bisnass He's a Serb.
This channel is everything I wanted Astrum to be!!
খুব তথ্য বহুল প্রতিবেদন। চালিয়ে যান ভাই, আমরা পাশে আছি।
Believe it or not, Iapetian geological features are named after characters and places in the French epic poem The Song of Roland.
Yesss. My favourite youtuber making space content made new video!
Wow, your english has improved alot.
A lot*
oh shit, how ironic huh?
cheese man Unlike you.
roasted :(
Where is he from then ?
Every video - *So we need a spacesuit*
The leading side of Iapetus in its orbit is the dark side. It's quite likely that a dark material from another moon may have settled there. It's also hypothesized that the mountain chain is the result of a ring around Iapetus that settled down on the surface, as it is on the equator.
Great video, as always!
You help raise the interest for us to visit this strange place. Thanks.
Cool video. Surfaces and general geology of planets and moons is awesome.
Especially Titan's methane rivers & lakes.
thumbs up +1
Great video content. I really enjoy your channel. thanks for sharing.
Dreksler I know you made a video about what will happen if Earth became half of it's size. I would like to know what will happen if the sun became half it's size. Do you know what would happen if the sun became half of it's size?
Everything will freeze
Higtex 98 maybe everything on Earth would freeze if sun became half it's size.I also like to know will the planet Venus freeze if the sun became half of it's size?
I'm guessing Venus will be half the temperature it is now.
Early squad!
Also, love your vids!
"That is no moon, that's a space station." -Obi wan Kenobi
A nice place to chill out and get away from it all.
Aka death star
aka NOT death star
if the earth, venus and mars orbited a gas giant on the habitable zone.
Eart *
@iMaGiNE True
Have a look at my channel for another video about Iapetus. I have also written a free-to-download book called "Secrets in the Solar System" which has a chapter about Iapetus.
What's with these obscuring blocks in the screen? Do we have to censor things that resemble the truth too much?
Damn, I want to hike up one of these mountains so badly, but I was born a century too early :(
Love your vids❤️
How about Standing on Saturn's Major Icy Moons Dione and Tethys next time?
Perhaps Iapetus' largest crater is the collision point between it and a celestial body perhaps made of ice, that of whatever material(s) were floating around that region of space. Then, the ice shattered and the chunks went flying above Iapetus, later to be pulled down and consolidated by gravity into splatter marks
Well Done :)
I love your choice of music gor these videos well done
1:56
That's a giant walnut
The geological diversity found among the many moons in each of the gas giants in our solar system is simply startling. And yet, we are not even able to imagine for a moment the mind-boggling, strange geological formations we would find on the rest of trillions of planets and moons orbiting stars within our Milky Way, and beyond.
I like music, that you used. It's like Stellaris soundtrack!
2:12 Why Iapetus Dark Side’s Surface Looks Blur?
Aye somehow it had 0 views :D Nice video!
My dream is to play basketball on the moon.
It depends on Iapetus orbit to determine how is it that far from Saturn and still remain locked. And yes, it's so needed to send robotic probes for a more specific analysis and study of much ignored Iapetus!!
Congrats on 100K subs
One of the Crispiest & HD photo / picture of the mysterious Saturn's moon >>> Lapetus! ( Pronounced Lay~Pe~Tus ) .Thank You So Much Dreksler Astral! 🕯🌷🌿🌍💖
WOW! These videos are so interesting
I love that music
Here before you reach 100,000 subscribers
Make a video about the possibility to live over the clouds of Venus.
I love ur Vids plz make more
I wonder what could be standing on Saturn's fractured and cratered major frozen moon Tethys.
The mountain wall is probably caused by the material of a ring of saturn raining down on the moon.
I think the mountain chain formation is more likely a tidal process due to the great planet...
These are the major moons in the solar system:
Mercury - no moons
Venus - no moons
Earth - moon
Mars - Deimos, Phobos.
Jupiter - Io, Callisto, Europa, Ganymede.
Saturn - Iapetus, Enceladus, Titan, Mimas, Rhea, Tethys.
Uranus - Oberon, Ariel, Titania, Umbriel, Miranda.
Neptune - Triton, Proteus.
Earth, and Uranus are my favorite planets in the solar system. Earth is my favorite planet because it has amazing biodiversity, it is our home planet, and it has beautiful scenery. Uranus is also my favorite planet because it was discovered before Antarctica.
Nice video
Do what would earth be like with no moon
have you been to space before?
how long is a tousin kilometers?
EnzedDev A million Meters
EnzedDev 625 miles
It's about 5 km!
LOL, I too noticed his mispronunciation.
One more thing you know: if you stand on the Saturnian weird moon Iapetus, you'll see Saturn's spectacular rings at an angle of fourteen degrees.
Love the background music, who made it or from artist is it?
Kevin McLeod
Why is the video blurred? :s
wooww it looks very interesting! can't wait to that moment when NASA finally find the way to fly beyond LEO and explore it.... :)
Keep up good work,
Best wishes from Russia.
The darkside has a crater that looks like an Apple upside down.
Masya Allah
Very good views
Speaking of Saturn's bicolor moon Iapetus, I wonder if that same weird natural satellite has cryovolcanoes as Titan and Enceladus or not.
A moon with a persona and a shadow aspect.
*No Atmosphere? I'm Sad!*
I've always wanted to fly,
just by flapping my arms•😢
*Wait a Minute?•🤔* I'm Sad,
because there's a snowball's
chance in Hell, I could even
get there!•😕
The ridge on this moon makes it look like a lollipop head lmao
What about the "resort/laboratory' structure on the ridge? Nothing?
Why does the video go blurry in some places?
I wonder what Iapetus will look like when the ice water melts during the sun's red giant stage.
Is it me or do i feel something strange?
I just realized, me and this guy have the same guy in our pfp lol
3:43 "surface features on its surface". Where the hell else would they be?
Why didn't you mention the exagonal craters?
Cool
Next time I get really hi I'm coming here
Mount Everest (sagarmatha) is in Nepal.
It's a Walnut and a death ⭐
2:02
mm yes
*blur*
Epic
Just subscribed to your channel and its incredible. Can you make a video about ganymede orbiting around us instead of the moon?
How would it feel like standing on Kepler-186f ?
Where were you from so many days
Was not Saturn's Moon Iapetus the true destination in 2001 A Space Odyssey not Jupiter.
I could swear this VOICE is *Gloomy House*
Why does it get blurry in 2:01
What if you were standing in a planet that was in the roche limit?