We should be searching this phenomenon for planets with origins outside of our own galaxy, but within reach of our telescopy?
http://news.bbc.co.uk/1/hi/sci/tech/3142582.stm
Full Version: Planets in another galaxy?
Sagittarius has been smeared across space 
QUOTE
"Remarkably, stars from Sagittarius are now raining down on to our present position in the Milky Way.
"Stars from an alien galaxy are relatively near us. We have to re-think our assumptions about the Milky Way galaxy to account for this contamination."
"Stars from an alien galaxy are relatively near us. We have to re-think our assumptions about the Milky Way galaxy to account for this contamination."
so if galaxies mix together and there are no precise boundaries, what defines the identity of a galaxy?
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