NEW UPC 799695615582 Named for the crescent-shaped wave a ship makes as it moves through water, a bow shock can form in space when two gas streams collide. In this case, the young star, LL Ori, emits a vigorous wind, a stream of charged particles moving rapidly outward from the star. Our own Sun has a less energetic version of this wind that is responsible for auroral displays on the Earth The Orion nebula is a close neighbor in our Milky Way galaxy, at only 1,500 light-years from Earth. The filters used in this color composite represent oxygen, nitrogen, and hydrogen emissions. These high resolution images of space scenes are matted to perfection on quality card-stock board and feature a description of the image on back. Image property of NASA. Hubble Telescope Deep Space Images 12049$3.25 Barcode Option: No BarcodeBarcode (+.10) All images © Astrolith Graphic Products, inc. and John C. Wittenberg unless otherwise identified.