NASA's Hubble harvests distant solar system objects
Tuesday, September 14, 2010 - 06:21
in Astronomy & Space
Beyond the orbit of Neptune reside countless icy rocks known as trans-Neptunian objects (TNOs). One of the biggest, Pluto, is classified as a dwarf planet. The region also supplies us with comets such as famous Comet Halley. Most TNOs are small and receive little sunlight, making them faint and difficult to spot...