From Phil Plait's BA Blog, NASA's Dawn mission released new photos and a video of the approach to the 2nd largest asteroid, Vesta. It's a main belt member 500km, that's 300 miles, wide. According to Phil, that's the size of Colorado. Big rock. Note the cool "Snowman" crater system on left side.
Dawn will, after orbiting and probing Vesta for a while, head on over to the BIGGEST asteroid in the solar system, Ceres. At almost 1000km (600 miles) wide, it's quite large; like maybe two Coloradoes (Colorados? Coloradii?). Can't wait!
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