... In the Center of the Heart Nebula . ... The red glow and the larger shape are all created by a small group of stars near the nebula's center. ... Filaments Across the Sun . ... Known as Kemble's Cascade, the asterism contains about 20 stars nearly in a row stretching over five times the width of a full moon. ... Caught in sunlight, icy moon Mimas shines above a broad shadow across gas giant Saturn. ... Saturns Moon Dione from Cassini . ... Saturns Moon Tethys from Cassini . ...