View Full Version : Some Stars Take an Erratic Journey

2005-Sep-10, 11:27 AM
SUMMARY: Our Solar System takes a very consistent journey as it completes an orbit around the centre of the Milky Way galaxy, similar to the way our Earth goes around the Sun. But astronomers from the European Space Agency have used the Hipparcos space-based observatory to find stars which don't stay put in the galaxy. Instead, these rogue stars will travel on a more erratic path, perhaps given a kick by the denser leading edge of the Milky Way's spiral arms. These kinds of stars account for 20% of stars within 1000 light-years of the Sun, so it's a very common situation.

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