51 Ophiuchi and its Dust Disks (IMAGE) NASA/Goddard Space Flight Center Caption This diagram compares 51 Ophiuchi and its dust disks to the sun, planets and zodiacal dust in the solar system. Zones with larger dust grains are red; those with smaller grains are blue. Planet sizes are not to scale. Credit NASA/GSFC/Marc Kuchner and Francis Reddy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.