PhysOrg: more planets in the solar system??

[Doum]

There could be at least two unknown planets hidden well beyond Pluto, whose gravitational influence determines the orbits and strange distribution of objects observed beyond Neptune. This has been revealed by numerical calculations made by researchers at the Complutense University of Madrid and the University of Cambridge. If confirmed, this hypothesis would revolutionise solar system models.

http://phys.org/news/2015-01-trans-nept ... solar.html

[bystander]

Trans-Neptunian objects suggest that there are more planets in the solar system
PhysOrg | Platforma SINC | 2015 Jan 13

Flipping minor bodies: what comet 96P/Machholz 1 can tell us about the orbital evolution of extreme trans-Neptunian objects
and the production of near-Earth objects on retrograde orbits - C. de la Fuente Marcos, R. de la Fuente Marcos, S. J. Aarseth

• Monthly Notices of the RAS 446(2) 1867 (2015 Jan 11) DOI: 10.1093/mnras/stu2230
  arXiv.org > astro-ph > arXiv:1410.6307 > 23 Oct 2014 (v1), 06 Nov 2014 (v3)

Extreme trans-Neptunian objects and the Kozai mechanism:
signalling the presence of trans-Plutonian planets - C. de la Fuente Marcos, R. de la Fuente Marcos

• Monthly Notices of the RAS Letters 443(1) L59 (2014 Sep 01) DOI: 10.1093/mnrasl/slu084
  arXiv.org > astro-ph > arXiv:1406.0715 > 03 Jun 2014 (v1), 16 Jun 2014 (v2)

[MargaritaMc]

Today's astrobite by David Wilson, a PhD student at the University of Warwick, explores this research Are There Two Missing Planets In The Solar System?