... These ice chips were shed from Comet Swift-Tuttle. ... Dubbed NGC 6589 and NGC 6590, the colors of this nebulosity, are caused by gas and dust. ... The Hydra Cluster of Galaxies . ... White Oval Clouds on Jupiter . ... What are those white ovals all over Jupiter? ... The above pictured white ovals are located near the Great Red Spot, and have persisted on Jupiter since the 1930s. The Great Red Spot has persisted for at least 300 years. ... Why do many galaxies appear as spirals? ...