Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Thu., July 24, 2003, at 3:00 p.m.

Mission to Earth's Core: Why and How?

David J. Stevenson, California Institute of Technology
Building 6008, Conference Room

"Planetary missions have greatly enhanced our understanding of our solar system and how planets work. There is no correspondingly ambitious effort for Earth's interior, where there are some equally fascinating scientific issues. I describe here a mission to Earth's core in which the probe is embedded in a large volume of liquid iron alloy that migrates to the core along a crack propagating under the action of gravity." [From: A Modest Proposal: Mission to Earth's Core, Nature, May 15, 2003.]

Reference: Deep Thoughts by Sarah Simpson on Scientific American, August 2003 issue.