You keep using that word... (Score: 1) by firstname.lastname@example.org on 2014-10-24 23:01 (#2TPH) ...I do not think it means what you think it means.http://en.wikipedia.org/wiki/Radioactive_(disambiguation) Re: You keep using that word... (Score: 1) by email@example.com on 2014-10-25 06:47 (#2TPS) When you are showered by gamma/cosmic rays, or high energy particles, does it matter where they come from? Re: You keep using that word... (Score: 1) by firstname.lastname@example.org on 2014-10-25 09:00 (#2TPW) My point is, cosmic rays or space itself cannot be "radioactive". Radioactivity is a property of ordinary matter.But yeah, I'm being needlessly pedantic. Thanks for the submission, I did enjoy the "article". And thanks for linking directly to the source, by the way -- that's something that rarely happens on /. these days.