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originally posted by: PurpleSun
Apparently this strange spiral seen all over Vanuatu skies this past weekend. Seen in Port Vila, all the way up in Santo, and in Tanna as well! Also seen by the neighboring countries New Caledonia and Fiji. It was spiraling for minutes before it disappeared. Similar spirals also appeared in:
Russia- April 2014
Mexico- March 2014
Norway- December 2009
Australia- June 2010
New Zealand- March 2011
Mongolia- June 2011
Ukraine- November 2011
Israel- June 2012
Anyone have any idea what these are from?
second floor of a Chinese Long March 2 C rocket, which took off June 18 at 06 h25 UTC from Xichang launch center,
After completing its mission, the floor would have expelled his fuel (from UDMH and nitrogen peroxide) to passivate, i.e. avoiding it exploding into orbit due to the residual pressure in the tanks.