An artist's concept of the birth ring of debris encircling the 12-million-year-old star AU Microscopii. Porous, snowball-sized bodies collide within the birth ring. Stellar winds disperse dust grains away from the star beyond the birth ring to the outer debris disk. View full-size graphic (Credit: NASA, ESA an A. Feild STScI)
01/14/09
View full-size graphic (Credit: NASA, ESA an A. Feild STScI)" style="text-decoration:none">Full Size
