This light display appeared between 04:30h and 4:45 h on Tuesday morning 12-26-2017, over the Soboth in South-west Steiermark province Austria, the view in towards the East.
Gerald Reczek reported on twitter, as he was walking his dog in the early morning hours, he saw a light rise up from the horizon and and disperse within 15 minutes.
Severe Weather Europe responded and speculated is likely be the Russian Fregat upper stage burn on the launch of AngoSat communications satellite, Angola's first satellite, from the Baikonur Cosmodrome in Kazakhstan.
https://en.wikipedia.org/wiki/AngoSat_1According to SWE similar sightings were made in Romania.
No reason is given why a Russian rocket from Kazakhstan would be seen in Austria. Similar explanations were produced when the Norway Spiral appeared over Oslo in 2009.
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Comment: The Russian rocket explanation seems unlikely. Whatever the immediate cause, perhaps this has something to do with the luminescence:
As we've theorized in Earth Changes and the Human Cosmic Connection, the atmosphere has become more electrically charged these days as it accumulates increased levels of comet dust (more generally termed 'meteor smoke') and volcanic dust. The atmospheric dust captures electrons that circulate from the (relatively) negatively-charged Earth to the positively-charged ionosphere, creating atmospheric regions with varying electric potential.
The atmosphere is not one homogeneous space - its electric potential varies according to elevation (as a general rule; the higher, the more positive) and to dust concentration (negatively-charged regions). The combustion particles in the rocket trail become electrically-charged (ionized) and when the electric potential difference between the ionized combustion particles and the surrounding space is sufficiently high, it glows.
See:
SpaceX rocket launch spooks Californians with eerie glowing trail (VIDEOS)
ISS astronaut captures mysterious light in space - Trail from unannounced 'missile launch'? (PHOTO)
Last night, ESA/Italian astronaut Luca Parmitano posted some bizarre photos via his Twitter account from the International Space Station. A mystery rocket contrail could be seen rising above the...Then too they had to 'stretch' to make it correspond with a rocket launch. A recurring theme of late!