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Two Planets As Big As Earth ‘Could Be On Edge Of Solar System’

Posted by on January 19, 2015 in Earth & Space, Sci-Tech with 0 Comments

The Guardian

An artist’s impression of one of the two as-yet undiscovered planets. Photograph: Nasa/JPL-Caltech/PA

An artist’s impression of one of the two as-yet undiscovered planets. Photograph: Nasa/JPL-Caltech/PA

At least two as-yet undiscovered planets as big as Earth or larger may be hiding in the outer fringes of the solar system, scientists believe.


The secret worlds are thought to exist beyond the orbits of Neptune, the furthest true planet from the Sun, and the even more distant tiny “dwarf planet” Pluto.

The evidence comes from observations of a belt of space rocks known as “extreme trans-Neptunian objects” (Etnos).

Orbiting the Sun beyond Neptune, Etnos should be distributed randomly with paths that have certain defined characteristics. But a dozen of the bodies have completely unexpected orbital values consistent with them being influenced by the gravitational pull of something unseen.

Spanish lead scientist Professor Carlos de la Fuente Marcos, from the Complutense University of Madrid, quoted by the Spanish scientific news service, Sinc, said: “This excess of objects with unexpected orbital parameters makes us believe that some invisible forces are altering the distribution of the orbital elements of the Etno, and we consider that the most probable explanation is that other unknown planets exist beyond Neptune and Pluto.

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