Outflow and the origin of galaxies.

Outflow from the centre as the origin of galaxies.

The movement of stars is vital to understand in galaxy evolution. Merger suggests stars are orbiting in circles around the galaxy. However, stars may be moving in spirals and yet seem circular if that process was gradual. Orbits are so vast and stars trajectory comparatively slow that spiralling may be hard to detect.

'Rather than moving in circles around the center of the Milky Way, all the stars in our Galaxy are travelling along different paths, moving away from the Galactic center.' This has been evidenced by Arnaud Siebert and Benoit Famaey, astronomers at the Strasbourg Astronomical Observatory, and by their colleagues in other countries.

Outward spiralling is likely to originate or start close to the Galaxy Centre, the location of a Super Massive Black Hole and nothing should escape those.

And yet these galaxy cores behave strangely. Instead of matter being gobbled up by immense gravity, most seems to move away in whats called 'outflow'. Large amounts of matter may spread out across the galaxy in a process like growth. This will help to describe the formation of galaxy features and the influence of the central object on the grand design by the movement of matter in galaxies. Outflow is a fundamentally different process to merger.

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