Added: 3 years ago
From: TheBadAstronomer
Views: 17,690
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  • EPIC, proces that takes billion years to complete we see in just a few second...

  • @fertilizerspike Exactly how big was the ass you pulled that from?

  • That remembers me water movements...

  • It takes millions of years for a star to form. Apparently we had cameras filming shit back then, i didn't know it but fuck yeah!

  • BY THE WAY GUYS, that was just dry ice on water ^.^ Wbeaty did it too, it takes about half a day to gte the materials if ur unlucky

  • Is there software you can download that tries and do this? or is the computational overhead so massive that it's silly to think you could get your pc to pound out an animation like this in any reasonable amount of time?

  • That cloud is represented by ALLOT of particles and to crunch out an animation like this you'd need to recalculate each particles vector in relation to other particles (bacicaly pointing it towards the center of mass). And you'd have to do this for every frame, the more frames per second the more accurate results you'll get. For a simulation like this you need a a supercomuter and alot of time. However you could run mini sims of 20 or so objects smoothly with some free soft of the web.

  • @Zetimenvec There are code samples for CUDA and DirectCompute that can do relativly large n-body simulations in real time on commodity hardware. If you render the simulation offline then you can up the particle count by significantly.

  • Wow! Thats fucking amazing.

  • I love protostellar dynamics!

  • It's either going to be a HUGE supernova, or a relatively average blackhole.

  • relatively 'average' blackhole? Wouldn't the black hole be quite a huge one?

  • amazing!

  • I wonder how long it took the super computer to crunch out this 25 second video. Days?

  • Very cool. I'd imagine the simulation must start with some asymmetry in the cloud right? Is there rotation to begin with or does the rotation come from turbulence or something?

    I have to confess my ignorance when it comes to the mechanics of star formation.

  • Sadly, the creationists who keep saying that it's "theoretically impossible" for one of these things to happen may take years to catch up with new data like this.

  • Awesome. It's very much like I pictured it.

    Nature is all spirals and swirls.

  • cool!

    (still, a little commentary would make it even better)

  • Just wondering, is that how long would it take on a real, fully sized scale? Or would it take millenniums or something?

  • Sweet!

  • One of the best videos on youtube i've seen in awhile.

  • How is this done?

    Do they look at it for a long time and speed up the changes or something?

  • It's a simulation. They model the physical conditions inside a cloud using known physics, and solve the equations as time goes on. So they can figure out where the gas is, how it moves, how gravity and pressure affect it, and so on.

  • Sounds Cool

  • In Carl Sagan's original Cosmos sseries there was a similar simulation; however because computers were not as powerful then there only about 100 stars visible in the simulation you could see each one individually and easily visualise that it was produced by "simply" calculating for each particle the motion, speed, gravity etc and letting the computer do the rest.

  • sorry meant 1000 stars

  • wow that is so sweeet. this is something ive always wished for a visualization

  • hi!

  • Very nice. Interesting. The model also suggests how binary systems may form, if the parameters are slightly different.

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