That is fascinating, Mark. But I think C-14 dating has been tested against known ages of objects. I seem to remember that some adjustments are made in that, but that the final dates are quite accurate. Many thanks, Joe ----- Original Message ----- From: Mark Shelton <astroshelton@yahoo.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Cc: Sent: Wednesday, August 8, 2012 3:28 PM Subject: [Utah-astronomy] Sun and radioactivity Have you seen this? The Sun is changing the rate of radioactive decay, and breaking the rules of chemistry http://io9.com/5619954/the-sun-is-changing-the-rate-of-radioactive-decay-and... Mark Mark Shelton Indian Hill Middle School Tech Ed. Teacher Salt Lake Astronomical Society Board Member (School and Special Star Parties Coordinator) _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".