• August 18, 2011

    Episode 348: Neptune Completes a Full Orbit

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    Neptune is the solar system's farthest major planet from the Sun. Its larger neighbors, Jupiter and Saturn, draw a lot of attention, but Neptune has interesting weather patterns and differs from the two large gas planets in structure and composition. It's similar to its near-twin Uranus, and it even has a ragged ring system. Neptune has just completed its first full, 165-year orbit since its discovery in 1846. Hubble images commemorate the event.