<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<div><br class="">
<blockquote type="cite" class="">Today at 4PM at MIT, 54-915 (the Green building)<br class="">
<div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<div class=""><br class="">
</div>
<div class=""><br class="">
<br class="">
<b class="">Peter Goldreich<br class="">
</b>Professor of Planetary Sciences, Princeton University<br class="">
<br class="">
<br class="">
<b class="">"Enceladus: Its Past, Present & Future"<br class="">
</b><br class="">
Saturn’s satellite Enceladus displays a bewildering array of ther- mal activity due to tidal heating associated with its 2:1 mean motion resonance with Dione. I’ll address the following questions. Why is this activity centered around the south pole? How are
the fractures that cross this region maintained, and how is heat transported through them? Is Enceladus in a steady-state? What is its future?<br class="">
<br class="">
<b class="">About the Speaker<br class="">
</b><br class="">
Peter Goldreich has made profound and lasting contributions to planetary science and astrophysics, providing fundamental theoretical insights for understanding the rotation of planets, the dynamics of planetary rings, pulsars, astrophysical masers, the spiral
arms of galaxies, oscillations of the sun and white dwarfs, turbulence in magnetized fluids, and planet formation. His current research is focused on the production of impact spherules.</div>
</div>
</div>
</blockquote>
</div>
<br class="">
</body>
</html>