Noteworthy Quote: Habitable Worlds

"The bottom line of this is something like one in five of all stars may have an analog to Earth. That's a lot of habitable worlds, and, indeed, the number of Earths in our own galaxy might be on the order of 50 billion."

-Statement by Seth Shostak, senior astronomer at California's SETI Institute, at the NASA/Library of Congress' two-day symposium, "Preparing For Discovery."