Welcome to the forum,
reedster.
Note: several of the above posts were merged from new threads started in the
General Science and
Q&A sections. Since they follow the same reportage, I thought it'd be easier to consolidate them here.
Previous thread on the same topic:
Edit: I'd initially had just merged two threads, but added a third so that we don't end up discussing the same topic in multiple places. Sorry for the mess.