Gems, Metal, and Earth's Core

The Fire of Australia, a whacking great chunk of opal, isn't particularly interesting from a 'science' viewpoint.

But I'm human, which is probably why anything big and shiny gets my attention: including that rock.

Wrenching myself back on-topic, scientists found a stream of liquid metal flowing at the edge of Earth's core. Studying it may help us learn why Earth's magnetic field flip-flops at apparently-irregular intervals. What we'll learn is beyond me: we didn't know much about geomagnetic reversal when I started school.

We still don't, for that matter. As I keep saying, there is a very great deal left to learn.

More at A Catholic Citizen in America.

Comments

Popular posts from this blog

10 Minute Daily Retreat: 7 Months, 7 Gifts of the Holy Spirit

‘You are my Son, the Beloved; with you I am well pleased.’ Sunday Reflections, The Baptism of the Lord, Year C

St. Etheldreda of Ely (Audrey)