planète X historique SPACE.COM / CONFIRMATION DE SON EXISTENCE

2011

FAQ: Will NASA Settle Debate Over Existence of Giant Planet 'Tyche'?

A decade ago, a group of astronomers proposed the existence of Tyche, a planet larger than Jupiter on the outer edge of the solar system. And recently they suggested that NASA's WISE spacecraft may

http://www.space.com/10952-nasa-giant-planet-tyche-faq-wise.html

2013

Nemesis Star Theory: The Sun's 'Death Star' Companion

In a survey of the sky, WISE found more brown dwarfs farther from the sun than it did nearby. In this image of our astronomical back yard, shown from a the view of 30 light-years from the sun, brown

http://www.space.com/22538-nemesis-star.html

2014

Where's Planet X? NASA Space Telescope Discovers Thousands of New Stars, But No 'Nemesis'

A nearby star, shown in red, is a fast-moving dim L-subdwarf and one of the new stars to be found in the sun's backyard.Credit: DSS/NASA/JPL-Caltech A NASA spacecraft has pounded another nail into ...

http://www.space.com/24989-planet-x-search-nasa-telescope.html

2015

Mysterious Planet X May Really Lurk Undiscovered in Our Solar System

At least two planets larger than Earth likely lurk in the dark depths of space far beyond Pluto, just waiting to be discovered, a new analysis of the orbits of "extreme trans-Neptunian objects" ...

http://www.space.com/28284-planet-x-worlds-beyond-pluto.html