NASA Science News for September 14, 2004
Jupiter's moon Io is shooting tiny volcanic projectiles at passing spacecraft. They scorch through space traveling 670,000 mph, and they can even reach Earth. The Ulysses spacecraft discovered the fast-moving bits of ash in 1992, and encountered them again this year, raising new questions about the solar system's weirdest meteoroids.
FULL STORY at
http://science.nasa.gov/headlines/y2004/14sep_jupiterdust.htm?list907772