 The Hubble Space Telescope is entering its 25th year in operation. Here it imaged three sections of the beautiful Vale nebula in 1997. We saw those in our segment on star clusters and supernova. In 2015 Hubble took another look, overlaying new images with the old. This allows scientists to study how far the nebula has expanded since it was photographed over 18 years ago. Despite the nebula's complexity and distance from us, the movement of some of the delicate structures is clearly visible, particularly the faint red hydrogen filaments.