<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Jeans instability - Page 1 - Wikipedia">
<p>
<a accesskey="3" href="page.php?w=Jeans_instability&amp;p=2">3.Next</a>
</p>
<p>The <b>Jeans instability</b> is a concept in <a href="page.php?w=astrophysics">astrophysics</a> that describes an instability that leads to the <a href="page.php?w=gravitational_collapse">gravitational collapse</a> of a cloud of gas or dust. It causes the collapse of interstellar gas clouds and subsequent <a href="page.php?w=star">star</a> formation. It occurs when the internal gas <a href="page.php?w=pressure">pressure</a> is not strong enough to prevent the gravitational collapse of a region filled with matter. It is named after <a href="page.php?w=James_Jeans">James Jeans</a>.</p><p>
<a accesskey="3" href="page.php?w=Jeans_instability&amp;p=2">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
