Thread: Contrails cannot form into clouds (proof!)
View Single Post
  #62  
Old 11-18-2009, 01:57 PM
Alferd Alferd is offline
Junior Member
  
Join Date: Nov 2009
Posts: 22
Default Re: Contrails cannot form into clouds (proof!)
even in the summer, it gets down to -40 degrees at the altitude that most comercial jets fly. What evidence do you have regarding the altitudes of observed contrails?
Reply With Quote