... Orion Nebula in Oxygen, Hydrogen, and Sulfur . ... The Nebula's glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud. Curiosity: Wheels on Mars . ... Could life ever have existed on Mars? ... The Milky Trail . ... Have you ever hiked the Queen's Garden trail in Bryce Canyon, Utah, USA, planet Earth? ... The Eagle Nebula and the Swan Nebula span this broad starscape, a telescopic view of the Sagittarius spiral arm toward the center of our Milky Way galaxy. ...