Planet Nine Planet Nine Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravity could explain the unlikely clustering of orbits for a group of extreme trans-Neptunian objects (eTNOs) that orbit beyond Neptune with average distances greater than 250 AU. These eTNOs tend to have their points of closest approach to the Sun clustered in one direction, and many of their orbits have a similar tilt. This evidence suggests that the gravity from a large undiscovered object is influencing the orbits of the most distant known Solar System objects. This undiscovered super-Earth-sized planet would have an
Terra: The Nature of Our World previous podcasts. LifeOnTERRA's ("TERRA: The Nature of Our World's") website http://www.lifeonterra.com/ was launched in October 2006. This site features a new biweekly episode ready for viewing and downloading, along with its 8 seasons of documentary offerings. All videos are offered as QuickTime (.m4v). The current website was launched in September 2013 and includes many features from the previous website, with a fresh new look. The website was designed and built by Jeff Reed. Hosting for the Videos is provided by Vimeo. As - TERRA: The Nature of Our World-www.lifeonterra.com is the winner of two 2013 WEBBY awards, the People's Voice