This image, which combines X-ray, infrared and optical images, shows a supernova within the galaxy M100 that may contain the youngest known black hole in our cosmic neighborhood. Chandra X-ray Observatory Center/NASA/CXC/JPL/Caltech hide caption

itoggle caption Chandra X-ray Observatory Center/NASA/CXC/JPL/Caltech

Virgin Galactic is developing a suborbital spacecraft to carry spaceflight participants to about 65 miles above Earth. The craft, SpaceShipOne, is carried high above the Earth by a special plane called The White Knight, then launched. Courtesy of Scaled Composites hide caption

itoggle caption Courtesy of Scaled Composites