http://www.abc.net.au/news/2013-01-0...eysers/4450956
A team of astronomers observing the phenomenon from a telescope in the New South Wales town of Parkes say the so-called space geysers are being spewed out of newly-formed stars - and not from a black hole at the centre of the galaxy as previously postulated...
From top to bottom the outflows extend 50,000 light-years out of the galactic plane, equal to half the diameter of our galaxy.