Message posted by Peter Merlin on May 22, 2010 at 20:46:15 PST:
Years ago, someone reported seeing a contrail that looked like "doughnuts on a rope" (probably just ordinary subsidence) and sparked all kinds of speculation about pulse-jet engines. Now, there are frequent Internet postings of subsidence photos, usually along with claims that it is proof of "Aurora."
This is a pretty common phenomenon known as subsidence.
In Reply to: Contrails over LV- thought I'd share posted by Panamint on May 21, 2010 at 17:23:18 PST:
Replies: