Planet Nine estimated mass of ten Earths, a diameter two to four times that of Earth, and an elongated orbit lasting 10,000 - 20,000 years. Batygin and Brown suggest that Planet Nine could be the core of a primordial giant planet that was ejected from its original orbit by Jupiter during the genesis of the Solar System. Others have proposed that the planet was captured from another star, is a captured rogue planet, or that it formed on a distant orbit and was pulled into an eccentric orbit by a passing star. As of 2018, efforts have failed to directly observe Planet
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