Talk:Cosmic ray spallation

Editing artifact?
In the first paragraph, "...ranging from protons, alpha particles, and nuclei of many heavier elements" doesn't make sense. There isn't any to "to" to match with the "from".

Pollifax (talk) 06:42, 31 July 2013 (UTC)

Technetium should be man-made on the periodic table.
On earth at least it is entirely synthetic, and though it is possible that it has a transiant existence in cosmic events like supernovae the same is true of all elements. I think that periodic table should reflect the sources of teh elements on earth. Technetium has far to short a half-life to have a cosmogenic origin.

§ — Preceding unsigned comment added by Michalchik (talk • contribs) 08:05, 13 November 2015 (UTC)