I just found this website a little bit ago and the author is arguing that the speed of light hasn't been constant.
Here's the website:
I think the guy is a bit...wierd, but I'm not knowledgeable enough to really take apart his argument. The frustrating thing is his wife uses her husband's data to prove a young earth on http://www.baptistboard.com/ubb/ultimatebb.php (under the creation/evolution section).
This is the same person who I threw the meteor data at.
In any event I'm frustrated and feeling as though the effort isn't worth the trouble.
Incidentally is the speed of light covered in astronomy or physics?