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Stories about: Planet X

Planet X: Earth-sized Planet May Lie Beyond Neptune There is definitely something out there, orbiting in the outer edge of the solar system. Maybe a planet with a size comparable to that of Earth, locked in a highly elliptical eccentric orbit, hidden away from our keen eyes. But what if we're looking in the wrong place? According to professor Tadashi Mukai from K... 18 March 2008 05:37 GMT Pluto or Neptune? More than two years ago, before Pluto was demoted from its status of planet to that of minor planet, it was still considered the most remote planet from the Sun. Or, was it? If you look closer to the orbits of Pluto and Neptune, you might observe something unexpected. Pluto occasionally comes closer to the Sun than N... 22 January 2008 08:21 GMT Where is Planet X? There is another planet beyond the orbit of Neptune, and scientists say it's not Pluto. Ever wondered what the X in the name stands for? The X is the equivalent for unknown, opposed to the general believe that it represents the Roman numeral for 10. And another thing... how do you discover a planet that has neve... 16 January 2008 06:57 GMT