Hypothetical Planet X - NASA Science
WEBJan 20, 2015 · This hypothetical Neptune-sized planet orbits our Sun in a highly elongated orbit far beyond Pluto. The object, which the researchers have nicknamed "Planet Nine," could have a mass about 10 times that of Earth and orbit about 20 times farther from the Sun on average than Neptune.
Planet 10? Another Earth-Size World May Lurk in the Outer ... - Space.com
WEBJun 22, 2017 · A planet-size object may be orbiting the sun in the icy reaches of the solar system beyond Pluto. Scientists at the University of Arizona's Lunar and Planetary Laboratory (LPL) have determined...
Brilliant! Tenth planet turns out to be a shiner - Science News
WEBApr 12, 2006 · Xena, unofficially called the 10th planet, is the second-most-shiny known object in the solar system, new observations show. Scientists are scrambling to explain where Xena got its sparkle.
Weird orbits hint 'Planet Ten' might lurk at solar system edge
WEBJun 21, 2017 · Astronomers studying icy objects in a distant region called the Kuiper belt say an unconfirmed planet with similar mass to Mars could be responsible for tugging them out of alignment
NASA-Funded Scientists Discover Tenth Planet
WEBJul 29, 2005 · NASA-Funded Scientists Discover Tenth Planet. This time-lapse image of a newfound planet in our solar system, called 2003UB313, was taken on Oct. 21, 2003, using the Samuel Oschin Telescope at the Palomar Observatory near San Diego, Calif.
Object Bigger than Pluto Discovered, Called 10th Planet | Space
WEBJul 29, 2005 · Astronomers have discovered an object in our solar system that is larger than Pluto. They are calling it the 10th planet, but already that claim is contested.
Tenth Planet Discovered - Scientific American
WEBAug 1, 2005 · Tenth Planet Discovered. Astronomers have spotted a planet larger than Pluto in the far reaches of our solar system. Roughly three times farther away than Pluto, the new planet is the most...
Forget Planet 9—there's Evidence of a Tenth Planet Lurking ... - Newsweek
WEBJun 23, 2017 · A Mars-sized planet appears to be lurking at the edge of the solar system, scientists have announced. The "planetary mass object" seems to be disrupting the orbits of other, smaller rocky...
Tenth Planet Discovered in Our Solar System
WEBJul 29, 2005 · Narrated overview of discovery of tenth planet in our solar system. JPL is a federally funded research and development center managed for NASA by Caltech.
Solar System Facts - Science@NASA
WEBThe solar system includes the Sun, eight planets, five officially named dwarf planets, and hundreds of moons, and thousands of asteroids and comets. Our solar system is located in the Orion Spur of the Milky Way, a barred spiral …
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