This is for Sheila. I received this direct message in twitter from Sheila just before I left for Educon2.1 -"Stephen Squyres is going to be there! Autograph maybe?" Sheila, by her own admission, is a space nut. And who is Dr. Stephen Squyres? He is principal investigator of the Mars Exploration Rover Mission (MER). He is also a former student of the late Carl Sagan. Sheila, when I return to NH after EduCon, I'll give you the actual paper with the signature. But for now, this will have to do.