I have a basic question. What does the spectra of meteors tell us about the makeup of the parent comet, asteroid, dust cloud, or whatever? Is there a FAQ on the subject somewhere? Does the spectra show the elemental composition of the meteor? Thanks in advance for any information. Tom Ashcraft To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at: http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html