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Galactic Geysers Fuelled By Star Stuff


The new-found outflows of particles (pale blue) from the Galactic Centre. Credits: Ettore Carretti, CSIRO (radio image); S-PASS survey team (radio data); Axel Mellinger, Central Michigan University (optical image); Eli Bressert, CSIRO (composition)

The new-found outflows of particles (pale blue) from the Galactic Centre. Credits: Ettore Carretti, CSIRO (radio image); S-PASS survey team (radio data); Axel Mellinger, Central Michigan University (optical image); Eli Bressert, CSIRO (composition)

“Monster” outflows of charged particles from the centre of our Galaxy, stretching more than halfway across the sky, have been detected and mapped with CSIRO’s 64-m Parkes radio telescope. “These outflows contain an extraordinary amount of energy — about a million times the energy of an exploding star,” said the research team’s leader, CSIRO’s Dr Ettore Carretti.

The speed of the outflow is supersonic, about 1000 kilometres a second. “That’s fast, even for astronomers,” Dr Carretti said.

From top to bottom the outflows extend 50,000 light-years (five hundred thousand million million kilometres) out of the Galactic Plane. That’s equal to half the diameter of our Galaxy (which is 100,000 light-years — a million million million kilometres — across).

Full Story: http://www.csiro.au/Portals/Media/Our-Galaxys-geysers-are-towers-of-power.aspx
Also: http://www.icrar.org/home/galactic-geysers-fuelled-by-star-stuff

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