URL to an article that appeared in CNN
Quote from the first few paragraphs
"(SPACE.com) -- A new survey of stars near the sun reveals a wild and crazy
past in which wanderers arrived from all directions under the gravitational
influences of black holes, clouds of gas and invading galaxies.
European astronomers spent 15 years making 1001 nights of observations to
detail the motions of more than 14,000 stars that are currently in the solar
neighborhood, a tiny corner of the Milky Way. Tracing the movements back in time
with a computer, the researchers found that most of the stars were once much
farther from the sun than they are today.
While astronomers expected the early history of the Milky Way was quite
chaotic, most had believed "that it since had been rather calm," said study leader
Birgitta Nordstrom of the Niels Bohr Institute for Astronomy, Physics, and
Geophysics in Copenhagen. "But this turns out not to be true. Stars have been
perturbed all the time throughout the Milky Way history."
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