the only video that shows exactly how it works. All videos just shows animations and clips that doesn't show the real effects of gravity assist. this was really good
@beaclaster
3 жыл бұрын
Almost*
@afrodieter8891
3 жыл бұрын
I think it more shows that it works.
@fail-er544
3 жыл бұрын
How did this get 700 likes and only 2 replys
@delta0307
3 жыл бұрын
@@fail-er544 i watched this vid and left a comment way back when it had only 19k views i think 😅
@lc2c177
3 жыл бұрын
But why don't we spiral into the sun?
@kman2747
3 жыл бұрын
Probably the best explanation of a gravity assist I have ever seen
@thepolishtech1552
3 жыл бұрын
I mean that is how you visulize gravity
@oskha1815
3 жыл бұрын
Except it is wrong (but still great for visualization).
@thepolishtech1552
3 жыл бұрын
@@oskha1815 how is it wrong? I mean it is inacurate do to scale but its spot on
@TheAgamemnon911
3 жыл бұрын
@@thepolishtech1552 It's only for visualisation. Not only is the scale wrong, there is way too much drag involved, it also obviously misses the third dimension and the curvature is also not the same. The last bit doesn't matter for simple demonstrations, but you'll have to always keep in mind: This experiment is only a teaching tool. Do not attempt to perform math for the real thing with it.
@oskha1815
3 жыл бұрын
@@thepolishtech1552 this visualization is not representing space time curved (there is gravity involved which is why the thin fabric curved). There is no such force in space-time fabric so it is inaccurate. Because in relativity, every mass that move is actually moving in relativey straight line according to their reference (satellite as example). They are moving around because curved space-time also curve the "straight line".
@ThePaintballernick
3 жыл бұрын
Now I get it. I'll be able to launch more efficient missions in KSP
@desigeekchishi
3 жыл бұрын
I don't have a KSP but i would like to see a grand tour in KSP :) try it.
@RoydenRego
3 жыл бұрын
When I saw the video title I thought to myself "This ought to help in KSP". I come to the comments to see that I'm not alone. 🙂
@benr.4238
3 жыл бұрын
The part shown in this video is the easy part. The hard part is getting the planets to line up just how you need so you can get the desired exit path. It's all about timing.
@amberlewis012
3 жыл бұрын
Lol yep
@Strike2-9245
3 жыл бұрын
I don't really like gravity assists, my friend parked his duna craft on elliptical orbit to SOI and the mün ruined him
@TCBYEAHCUZ
3 жыл бұрын
What's incredible is that the little orange ball actually stole some of the momentum of the bigger ball, even though the mass difference is enormous.
@YellowLAVA
3 жыл бұрын
Yep
@00dawn
3 жыл бұрын
Imagine some time in the future when spacetravel is common. The orbits of the gas planets might be noticeably impacted! Wouldn't that be cool?
@redstar956
3 жыл бұрын
@@00dawn Cool, yes but potentially quite destabilising and destructive! Great point, thank you.
@KingdaToro
3 жыл бұрын
@@00dawn No, the mass difference is too great. Even if Earth itself were to do a gravity-assist flyby of Jupiter, Jupiter's orbit wouldn't change significantly. It probably wouldn't even change _measurably_ .
@thepolishtech1552
3 жыл бұрын
@@KingdaToro yeah but luna? (Sientific name for earths moon)
@susq_345
4 жыл бұрын
i thought that it only changes the direction of the spacecraft lol thanks for explanation btw i'm a ksp player
@sharkbitesback2749
3 жыл бұрын
Ay I also play KSP aka Kerbal Space Program
@fishraviolli4373
3 жыл бұрын
It’s all depending on the reference point. In respect to the planet, ship only changes direction
@turbogamer3230
3 жыл бұрын
@Bello Orbits sadly sfs is even more unrealistic then ksp, any more unrealistic then ksp
@beaclaster
3 жыл бұрын
relative motion :p
@johntheux9238
3 жыл бұрын
Well, relative to the body it just change direction, but not relative to the sun/main body
@daftmi9hty327
3 жыл бұрын
The simplicity is amazing but the actual engineering and maths behind doing this in real life is astounding complicated
@riccardoorlando2262
3 жыл бұрын
@John King Agreed - the hard part is the engineering, since tiny errors before the flyby turn into massive differences in trajectory after the flyby. KSP players know that nudging a manoeuver node before a planetary flyby causes the outbound trajectory to swing wildly.
@davisdf3064
3 жыл бұрын
Timing is very hard too
@aconite72
3 жыл бұрын
@@davisdf3064 Not really. We got the aid of atomic clocks. These things can measure time accurately down to nanosecs.
@davisdf3064
3 жыл бұрын
@@aconite72 Understandable, have a great day! : D
@RCaIabraro
3 жыл бұрын
Ya it's not that complicated. Freshman level calc
@armandoragusaucy96z.71
4 жыл бұрын
This is simply incredible!! Thank you so much, finally get it!!!
@adityakausadikar1133
4 жыл бұрын
Very simple and yet makes it easy to understand the complex concept. 👍
@AnupamVipul
5 жыл бұрын
you have my respect
@lilapela
3 жыл бұрын
0:00 took only 3 seconds to demonstrate it, excellent
@diakounknown1225
3 жыл бұрын
I have feeling I was recommended this because of Perseverance. This is cool
@marktime.
3 жыл бұрын
bet i just showed up in your notifications
@nervun8097
3 жыл бұрын
Lol same
@thalesnemo2841
3 жыл бұрын
Mars or bust !
@santisimulator
3 жыл бұрын
Although he didn’t use gravity assist
@Matthew-ju3nk
3 жыл бұрын
I have never fully understood this concept until now. This was a very good demonstration! Thanks!
@4ntig3n
3 жыл бұрын
Thank you. Years of KSP and Scott Manley prepared me for watching this - and now it's like the keystone was added to my minds framework of how gravity assists work.. I think I finally begin to understand it :)
@uss_04
3 жыл бұрын
To Wife; “I’m gonna need some PVC and a spandex sheet this big for a KZitem video”
@donsurlylyte
3 жыл бұрын
and a jar of vaseline
@viquezug3936
3 жыл бұрын
@@donsurlylyte Get your mind out of the gutter
@cyderman69
3 жыл бұрын
And balls of steel.
@Eric_The_Cleric
3 жыл бұрын
Wife: have you lost your marbles!? Husband: no, they're right here! *holds up 3 orange marbles* Oh that's right! I'm going to need them, too.
@flymousechiu
3 жыл бұрын
"... And besides, it worked in KSP."
@raphaelantonrainer
3 жыл бұрын
In the most videos you can see lines and trajectories but here you can actually see it. Good job!
@goranthoren5522
4 жыл бұрын
Great to see it visualized in this way, really clear! Thanks!
@Arthur_da_dog
3 жыл бұрын
Holly crap this makes so much more sense now! The directional change near the large ball changes the how much the small ball is affected by it's gravity.
@KitagumaIgen
4 жыл бұрын
Beautiful demonstration!
@polifemo3967
3 жыл бұрын
he timed it BY HAND. He's coordination is something else
@TehJojoBeans
3 жыл бұрын
Thank you, KZitem recommendation algorithm.
@scootsmcgoots1
3 жыл бұрын
Excellent demo
@souzadp
3 жыл бұрын
Very well made !! Congrats !! Great demo
@TheLogicult
4 ай бұрын
This is incredible. I which I had seen it earlier. The idea of the marble moving up the gravity well because of the relative velocities of the objects is something that I think I understood, but would never have been made so blindngly obvious as by this demonstration!
@kerbalgalactic7645
3 жыл бұрын
You definitely deserve more subs, I like ur content
@spamcan9208
3 жыл бұрын
Best demonstration I've seen. Whenever I've watched a show where they use this demo, they don't use a moving planet, nor do they show both how traveling behind and in front of said moving planet affects the speed. The two camera angles were great. A lot of detail for less than 3 minutes, I don't know why the science channel et al can't include a more complete demo. Nice job.
@davidmecatron4881
4 жыл бұрын
Great job, this is EXELENT !
@robertlavery6896
3 жыл бұрын
This short and simple video has suddenly allowed me to understand all those gravity models I've seen throughout my life...
@zastronomer7592
3 жыл бұрын
this guy just taguht me more than my teacher ever did in 5 years
@martinmoralaandres6034
3 жыл бұрын
I mean, this is one of the greattest things i've ever seen in scientific digulgation, awesome. Special thanks from spain
@marktime.
3 жыл бұрын
on behalf of Keanu SW's reply ive changed this comment
@LBOUNCER101
3 жыл бұрын
Yep
@BradElliot
3 жыл бұрын
Yess
@sivamynthannadesamoorthy9393
3 жыл бұрын
Yeah
@patolenho3732
3 жыл бұрын
Are you sure?
@dr.oobleck2317
3 жыл бұрын
Indeed
@greatunclestroller7179
3 жыл бұрын
A simple demonstration towards a new way of thinking
@anoopkfrancis3977
4 жыл бұрын
Underrated video ✌️
@Leviathan946
3 жыл бұрын
I've seen people use material to help visualize gravity, though never for more complex ideas. Great video.
@sir_duckington1245
3 жыл бұрын
the sad thing is it has friction so the balls will just go to the middle :(
@mario0318
3 жыл бұрын
And the most notable limitation for this demonstration is that it's two-dimensional, where spatially speaking gravity and space are three-dimensional. It's somewhat difficult, but not impossible, to imagine this same fabric surface but instead of one layer imagine the same fabric but rotated to fill all 360 degrees and directions for a sphere, until it's totally encompassing the steel ball from all angles in true 3D fashion. It might be easier to just picture how a large mass gravitational pull interacts with lesser mass objects regardless of the angle or direction they're approaching it from.
@jannikheidemann3805
3 жыл бұрын
@@mario0318 I just imagine a 3D sheet bending in the fourth dimension. Imagining 4D takes a lot of practice and requires holding more information in your mind than imagining something in less dimensions, which can get quite exhausting.
@equious8413
3 жыл бұрын
@@jannikheidemann3805 r/iamverysmart
@jannikheidemann3805
3 жыл бұрын
@@equious8413 r/ihavereddit
@equious8413
3 жыл бұрын
@@jannikheidemann3805 haven't used Reddit in over a year. You keep on "thinking in 4D" though. Lol
@TheAgamemnon911
3 жыл бұрын
Definitely the most tangible demonstration I've seen so far.
@charlesfarmer5749
3 жыл бұрын
So it looks like the rebounding “fabric” behind the moving planet is shoving the smaller one to a higher speed.
@Concord003
3 жыл бұрын
I'd say that in the model the inclined fabric makes the smaller ball roll downhill towards the bigger ball, giving the smaller ball more speed. So, in the same way, gravity pull from a larger planet gives the smaller craft a speed boost.
@noronha4223
3 жыл бұрын
I never thought I would see a gravity assist explanation so simple like this... Awesome job...
@angelofdeath96
3 жыл бұрын
Awesome, awesome, awesome! Now you only need to buy one of those $100k slow-mo video cameras and repeat the experiment : ))
@GlaceonStudios
3 жыл бұрын
A $400 GoPro would work just fine.
@sarkybugger5009
3 жыл бұрын
@@GlaceonStudios My $200 phone can do 960 fps...
@mageanast
3 жыл бұрын
Wow even playing ksp I've never understood gravity assists Your model is very nice and it made it clear !
@vandarkholme4745
3 жыл бұрын
The world is a better place because of this video.
@AstronomicalYT
3 жыл бұрын
What the HECK this is so freaking cool :O
@neodymium1110
3 жыл бұрын
Because it is so freaking cool! :D
@simplydoz
3 жыл бұрын
I never really understood this because the motion seems counter intuitive. If your spacecraft is moving toward the object it appears as if it's still to the observer inside the craft. This is the perspective I always had prior. But now that I understand the gravity well has a velocity and the craft use using that "grip" it has on space time around it it makes far more sense. And also docking maneuvers and other procedures now make more sense from a 3rd party perspective. Thank you!
@gastech8311
3 жыл бұрын
Claim your “here before 1 million views ticket” here
@ysccl
3 жыл бұрын
thank you
@hughmejos353
3 жыл бұрын
.
@thegreenpinguin6871
3 жыл бұрын
Affirmative
@Aseanmapping
3 жыл бұрын
K
@callummoloney8709
3 жыл бұрын
Wow you made a simple physical model of how gravity works. I am glad to now understand how this works but I am more impressed how simple it was to explain it.
@n.s.ac.i.ajointeffort1983
3 жыл бұрын
This guy needs to upload more content it's been a year did he loose his password or something
@swftwlly
3 жыл бұрын
I've known about gravity assist for a long time, but didn't really understand it until five minutes ago. Thank you.
@megasun
3 жыл бұрын
This maneuver consumes the kinetic energy of the planet... Very well made video, deserved more views.
@richardarcher3435
4 жыл бұрын
Very interesting video. Thank you, but my problem with gravity assist is why it is actually called GRAVITY assist whereas it is actually ORBIT assist as your demonstration clearly shows. Gravity takes away what it initially gives, in other words it does not assist.
@ayushsharma7342
3 жыл бұрын
The mechanism for transfer of energy from planet to ship is via gravity. Your statement is only true for the planet's frame of reference where the planet's kinetic energy is zero. From any other frame of reference gravity is not bound to take what it gave because it can just take the deficiet from the planet's kinetic energy. The orbit does not assist because it is not a force it is just a path, it can't do work. It is the kinetic energy of the planet that is exchanged via gravity.
@richardarcher3435
3 жыл бұрын
@@ayushsharma7342 Crumbs, sorry, I've read and reread your answer many times but I can't get my head around it. The mechanism for transfer of energy from planet to ship may be via gravity but being a transfer mechanism I can't see deserves it getting all the credit. It's like giving all the credit of the movement of a car to it's wheels rather than its engine. By kinetic energy are you referring to it's orbital energy or rotational energy? OK, I see your point about the orbit being a path rather than a force, in that case it should perhaps be orbit speed assist. I initially didn't understand gravity assist because it seemed you were getting something for nothing, but then someone mentioned that it took some of the planet's orbital speed and by doing so the planet actually lost the minutest amount of speed.
@alexwang982
3 жыл бұрын
@@richardarcher3435 yeah it slows down a bit.
@richardarcher3435
3 жыл бұрын
@@alexwang982 Yes, the planet's orbital speed does slow down a microcosmical bit because it is that that assists, not gravity.
@richardarcher3435
3 жыл бұрын
@(S)-Riley Dunn Yes I see that. I just don't see why it is called gravity assist whereas it's the orbital speed that actually assists. Gravity just transfers and takes away what speed it initially gives.
@hardwirecars
3 жыл бұрын
are you kidding im impressed with how accurate you are with the marble shooter.
@jannikheidemann3805
3 жыл бұрын
Through the magic of videography you don't have to nail the shot on take 1.
@hardwirecars
3 жыл бұрын
@@jannikheidemann3805 did i say you did?
@riduck
3 жыл бұрын
Gravity assisted?.. Throw in some general relativity and deduce that you're a time surfer.
@lucidonoccasion5012
3 жыл бұрын
Time surfer... I like that.
@paulpaulsen7777
3 жыл бұрын
Great visualization. First time, I understood slingshot maneuver
@vernonspady555
9 ай бұрын
A brilliant demonstration. Must have been a challenge, but it was amazing, accurate, and beautiful.
@kungfumachinist
3 жыл бұрын
This is the first time I understood that the planet's movement through space had anything to do with it. I always wondered why the entry acceleration wasn't simply canceled by the exit deceleration. Thanks for making this!
@omarimckenzie4084
3 жыл бұрын
hey i know your videos dont get alot of attention but id like to say keep it up because your videos are very fun to watch
@joevignolor4u949
3 жыл бұрын
The actual transfer of positive momentum and the velocity increase occurs as the spacecraft approaches and passes through the planet's gravity well while traveling perpendicular to the planet's orbital path. Then the spacecraft is deflected into a new trajectory that is more parallel to the planet's orbital path and as such the planet's gravitational attraction during departure is partially cancelled out. This results in a net overall increase in momentum because you gain more speed during the approach than you lose during departure.
@CCumva
3 жыл бұрын
Very obvious side by side comparison! Thanks you, sir!
@DavidNasr
3 жыл бұрын
this fabric looks soft and comforting
@PanduPoluan
3 жыл бұрын
Awesome physical demonstration 👍🏼👍🏼👍🏼
@everything777
3 жыл бұрын
You're getting the increase in speed because the pvc is rebounding after the steel ball drops into it and catching the smaller ball with this rebound, flicking it away faster. The amount the pvc is stretched should be constant in which case your "assist" wouldn't work.
@dissonantharmonic
3 жыл бұрын
This video only supposed to be a basic example to help people understand the idea behind it.
@ivanalfarth
3 жыл бұрын
This explanation is PERFECT
@oscarvasquez706
3 жыл бұрын
Impressive. Most impressive.
@no1dea261
2 жыл бұрын
Thats really cool how you can recreate the affect of gravity like that.
@spacedaway
3 жыл бұрын
Thanks
@robbudden
3 жыл бұрын
Mate, that is a brilliant explanation. Just awesome.
@veetamma3237
3 жыл бұрын
Great video. The best explanation of gravity seen so far.
@SprDrumio64
3 жыл бұрын
Props to the timing of the marble shooter, like damn
@OL9245
3 жыл бұрын
You made my day! I had this question in mind for yrears. This is the First time if found a real explanation to this procedure, and so simple to understand ❤️
@nicejungle
3 жыл бұрын
A most instructive video. Good work !
@nicheman4455
3 жыл бұрын
Good explanation, but what I find the most impressive is your timing!
@charistiaanharmse301
3 жыл бұрын
Awesome demonstration, made understanding the concept much easier
@sargundhillon2808
3 жыл бұрын
I never quite understood until now. This is a super great demo.
@marcmarc172
3 жыл бұрын
Excellent work!
@patrickmchargue7122
3 жыл бұрын
Excellent example. Thanks!
@Susul-lj2wm
3 жыл бұрын
This is the best irl model I have ever seen
@MrWozzy4
3 жыл бұрын
great video, i love how you show this stuff in practical instead of cgi, and it makes it clearer to understand, looking forward to your next video.
@scpdatabase969
3 жыл бұрын
So THIS is how you use planets for Orbital Strikes. *Takes notes*
@EnlightenedSavage
3 жыл бұрын
Never could figure out how this worked. Super simple demonstration made it very easy to understand. It seems like I was trying to overcomplicate it
@marzolian
3 жыл бұрын
Thanks. I have wondered how this work for years but it didn't really make sense until I saw this.
@traiantrante4211
3 жыл бұрын
This was a very useful gravity assist explanation.
@dark6.6E-34
2 жыл бұрын
Thank you so much for this explanation. Very intuitive!!!! It's also interesting to note that relative to the steel ball the marble's energy is conserved. Only relative to the observer (the sun) does the ball gain or lose speed.
@thehighgroundhimself736
3 жыл бұрын
This was explained insanely well. Props to you
@RedFoxRidge
3 жыл бұрын
Where do we find the math. I have understood this concept for a long time, but I would like to calculate it for a more in depth understanding.
@goaltokio3941
3 жыл бұрын
kzitem.info/news/bejne/kqlsxWinkV-mZaQ calculation like this?
@jimsagubigula7337
3 жыл бұрын
The video he sent you is pretty good. If you want to go more in-depth, you should study classical and analytical mechanics.
@Nat-jf2ge
3 жыл бұрын
That's a great visual representation
@MJPamuru20
3 жыл бұрын
This looks like a really relaxing fun thing to do alone haha
@michas9843
3 жыл бұрын
It's basic law of energy conservation. When ball is shot behind the moving ball, the bigger ball gives some of it's energy to the smaller ball (big ball tries to pull the small ball), when it's shot in front of the big ball, the small ball tries to pull the big ball giving some of it's energy and in result slowing down.
@funnyyylock
3 жыл бұрын
I'm impressed that you did that by hand pretty cool!
@hugo-garcia
4 ай бұрын
Thank you. I'm going to Alpha Centauri next week this will help a lot :)
@joeskater5782
3 жыл бұрын
So when you have your space craft go in-front of a planet, it’ll slow down, or am I mistaken?
@smile768
3 жыл бұрын
Very good explanation. Anyone can understand this now.
@melody3741
3 жыл бұрын
Thank you so much, everyone who has ever explained this to me has apparently done a really terrible job because not one of them has ever mentioned that the plan it has to be moving. Because of that it always confused me as to how you could possibly gain speed from that.
@Telencephelon
Жыл бұрын
absolutely incredible
@secularph8424
3 жыл бұрын
I used to have an idea about gravity assists, but I pictured it totally wrong in my mind. Thank you for this
@RodCornholio
3 жыл бұрын
Excellent modeling.
@stevo8782
3 жыл бұрын
I didn't know I needed to know this. Thanks.
@TenOfZero1
3 жыл бұрын
This is an amazing demonstration, thank-you !
@scottroberts4710
2 жыл бұрын
Excellent visual aid
@jim9219771
8 ай бұрын
I've heard gravity assist explained and I've seen renderings, this is the first actual physical representation of the gravity assist method to increase velocity. I'd like to see this model done again but with greater differences in the masses. The mass of the Sun is incredible, the difference in mass between the Earth and the Sun is astounding. I've heard it explained that the combined total mass of all objects orbiting the Sun is still incredibly inconsequential compared to the mass of the Sun. This is precisely why we can't show an actual physical model of gravity assist at scale. The smaller marble would need to be so small that it would be microscope.
@jim9219771
8 ай бұрын
Edit: this is the first actual physical model of gravity assist that I've seen.
@MainSequence1
3 жыл бұрын
Amazing how many people never seen this type of demonstration.
@flippert0
3 жыл бұрын
Thanks for posting! Naively, someone might think, that the probe should *only* change direction and not its velocity (with the probe acting like a cue ball and the planet like the edge of the pool table). Your video clearly shows that this is not the case and the probe accelerates or slows down respectively, because the planet is *moving* (duh!).
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