The Process of Triggered Star Formation

[TimmacTR]

what is this "dust" really formed of? is this dust actually millions of small stellar systems?

[rehzon]

Nice animation. Though I think that shock wave would only push those clouds

apart in a different direction. Considering gas expands (doesn't clump)

having spaced out atoms and little density at all.

[lukehi]

Would be awesome and useful for presentations if there was an animation showing the other possible triggering mechanisms, C&C, RDI.

[mayush99999]

great animation!

[astrocamp123]

Excellent video. Depth perception is preserved. I'll use it with my lessons.

Thank you!

[ananiasacts]

Be nice if you annotated it with a heads up display showing the time.

[RespectMyHate]

Ok so if you need supernova's to create stars and a supernova is an exploding star. what created the first stars?

[3daysfighters]

uhmm im like really young and i just started reasearching all these things and im pretty sure what made all the stars was the big bang because it created everything

[RespectMyHate]

No God created everything.

[intelegentdproduct]

the chance of a 747 re-assembling itself in a tornado is the chance of the big bang

[cptstubing]

@intelegentdproduct And the chances of their being an benevolent, omniscient, and omnipotent creator that cares about us ever so much are better?

[arbpotatoes]

God is the star breather.

However, if you look at things from a non-religious perspective, clouds of matter, mostly if not entirely hydrogen, which formed after the big bang would have condensed over time to form the first, supermassive stars with masses of over 150 times that of our Sun. Astrophysicists believe that such stars would only have lasted a few million years.

[lukehi]

this is only one of a number of theories, the process by which massive stars (the one that went supernova) is not yet fully understood. and stars dont only form by triggering like this, they can also form spontaneously

[Perspektyva]

Learn to read the bloody titles. A triggered star formation implies that there is a naturaly occuring procces and that procces is gravity. Gravity causes clouds of moleculse to collapse onto themselves, once the collapsed structure attains certain pressures and temeratures at it's core nuclear fusion takes place and thus a star i born. This video only shows that in certain conditions the natural collapse can be accelerated by a supernova close by.

[KJVWordofGod]

@Perspektyva ...tsk...tsk...Gravity is an extremely weak force and simply cannot account for the effect. The universe is electric...plasma. Nevertheless, no new stars have been formed since the beginning....despite cute little animations.

[cptstubing]

@KJVWordofGod You want to bring the word of god into this, you need to speak science and math, not religion. Gravity is indeed a weak force, but you saw something that takes millions of years condensed into 14 seconds. Don't forget time is very forgiving on small, weak, invisible phenomena.

[IloveYOUviruses]

@KJVWordofGod Not only that, the temperature required to achieve a thermonuclear reaction is so high (from millions to billions degrees K) that before you get to that point, the cloud would have dispersed again into the vacum of space according to the ideal gas law, which btw is testable unlike the dellusion of star formation.

[IloveYOUviruses]

@IloveYOUviruses The equation: PV=nRT

increase T

decrease V

and P increases so high that it is impossible so form any star.

Do the math, use 100 times the volume of the sun and 1million K ;) BOOM!

[sltlamina]

@IloveYOUviruses

The perfect gas equation doesn't really apply to... well, any gas in reality. You'll probably find that the 'gases' in a nebulae end up obeying the rule: PV/nRT > 1

And, in fact, the gas in a nebula isn't a regular gas at all. It's ionised gas; plasma. This would instantly invalidate the perfect gas law which assumes that gases are non-interacting point-particles. Ionised gases however are DEFINITELY going to interact with each other at a distance.

[KronXIII]

great great great. now could you send me a link to download this vid?

[kriptonis]

use downloadheper, a firefox plug in, it's awsome let's you download all the videos you want from youtube and other video sites ;)

[GRIDKEEPER]

Brilliant! Compression and expansion, love it.