At Least Two More Planets in Our Solar System-2015 Discoveries

There might me at least 2 planets that might be as big as the Earth or bigger- although they

haven't been discovered yet-  orbiting around our sun at the edge of our solar system far beyond Pluto..

This is one of the most important scientific discoveries done in 2015.

Professor Carlos de la Fuente Marcos, the lead scientist from the Complutense University of Madrid (UCM), quoted: ''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. The exact number is uncertain, given that the data that we have is limited, but our calculations suggest that there are at least two planets, and probably more, within the confines of our Solar System.''System.''

According to scientists, the proof that those planets might exist comes from the observations of a belt of space rocks known as ''extreme trans-Neptunion objects'' (Etnos). Etnos are space rocks distributed randomly with paths that have certain defined characteristics beyond Neptune. However a dozen of those bodies have a completely unexpected orbital value, suggesting that they are being influenced by the gravitational pull of something further in space still unseen.

Astronomers have spent decades debating whether a hidden planet beyond Pluto remained undiscovered.  One problem is that the theory goes against predictions of a computer simulation of the formation of the Solar System, which states there are no other planets moving in circular orbits beyond Neptune. 

However a recent discovery of a planet-forming disk of dust and gas situated more than 100-200 astronomical units from the star HL Tauri suggests planets can form long distances away from the center of a solar system and this distance is so far away that it would be very difficult or even impossible to detect these using currently available instruments. 

*(An astronomical unit, the distance between the Earth and the Sun, is the equivalent of 93 million miles).

This discovery suggests that the knowledge and understanding of our solar system, might be limited or wrong, and that there are definitely a lot things we need to discover yet.