Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: Steve Slack on 10/04/2011 10:28:17

Title: Is Earth's core cooling?
Post by: Steve Slack on 10/04/2011 10:28:17

Steve Slack  asked the Naked Scientists:
   I have a question..
 
How has the earths core remained so hot for billions of years?  Is it cooling down?
 
Some say it is as hot as the surface of the Sun, if that is the case, why are we not all frazzled, since the core is only a few thousand miles from our feet and the Sun is 93 million miles away??
 
Thanks
 
Steve Slack
What do you think?

Title: Is Earth's core cooling?
Post by: RD on 10/04/2011 14:51:35

Quote from: Steve Slack  on 10/04/2011 10:28:17

How has the earths core remained so hot for billions of years?

http://www.thenakedscientists.com/forum/index.php?topic=35188.0

Title: None
Post by: John on 03/05/2013 17:01:51

The next obvious (perhaps not so obvious) would be, what isotope of potassium is causing all that heat at the earth's core and more importantly, what is it's half-life?

Title: None
Post by: Ian on 14/04/2015 03:56:42

How is this different to Mars' core (http://www.abc.net.au/science/articles/2015/04/14/4215436.htm). If the liquid iron core of mars can cool why not the Earth's.