martes, 24 de mayo de 2011

Just Four Percent of Galaxies Have Neighbors Like the Milky Way

Visualization of the Milky Way galaxy at 16 million to 13.7 billion years old.






How unique is the Milky Way?

To find out, a group of researchers led by Stanford University astrophysicist Risa Wechsler compared the Milky Way to similar galaxies and found that just four percent are like the galaxy Earth calls home.

"We are interested in how the Milky Way fits into the broader context of the universe", said Wechsler. "This research helps us understand whether our galaxy is typical or not, and may provide clues to its formation ... 



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Provided by National Science Foundation