... When Roses Aren t Red . ... Likewise, the beautiful Rosette Nebula and other star forming regions are often shown in astronomical images with a predominately red hue - in part because the dominant emission in the nebula is from hydrogen atoms. ... Enceladus Near Saturn . ... The Coma Cluster of Galaxies . ... The Coma Cluster of Galaxies pictured above is one of the densest clusters known - it contains thousands of galaxies. ... Our Busy Solar System . ... Red Spot Jr . ... The Big Dipper Cluster . ...