"One example is an approaching gas cloud discussed at the meeting Friday. The cloud has a mass 1 million times that of the sun. It is 47 quadrillion miles away. But it's heading toward our Milky Way galaxy at 150 miles per second. And when it hits, there will be fireworks that form new stars and really light up the neighborhood"

http://news.yahoo.com/s/ap/20080111/ap_on_sc/odd_universe;_ylt=AjG8ZDvVJV_Jxo2LuTMNNrKHgsgF

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