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"By combining astronomical and laboratory data, we found that 90% of the surface of Eris is composed of nitrogen ice and 10% by methane ice, which not at all very different from that of Pluto, "said David Cornelison, co-author and physicist at the University of Missouri State.

The epic journey of 10 years and 5000 million kilometers toward the edge of our solar system NASA probe New Horizons is already 50% completed. New Horizons will allow us a few years take the first look at the unknown planet Pluto.


transneptunian
The old world, who lives in a different light is not the Sun, visible to the eyes of cats, dogs and deer they see in infrared.

Some satellites of giant planets, as Ganymede and Callisto (Jupiter), Titan (Saturn) and Triton (Neptune) have sizes similar to the dwarf planets, and in some cases, similar compositions.

"trans-Neptunian objects interest us because they are leftover building blocks of the solar system formed," says the main responsibility for research, Cesar Fuentes, a professor at Northern Arizona University (USA) and former member Harvard-Smithsonian Center for Astrophysics.

I mean, as opposed to what is stated ut supra, predate the Sun has integrated its systems from other planets and moons aligned preexisting but not before producing a terrible event that left a scar visible in the craters and debris that remain erratic system.

The Trans-are on track to system integration, still almost as "exorbitant."

The Sun, as the collapsed object, should spin faster (like a pirouetting dancer pulling in her arms). But the sun turns slowly. Almost all the angular momentum in the solar system planets are in orbit. Ecuador And the Sun has an inclination of 7 degrees to the plane of the planets in orbit.

Each planet is unique, individual, personal, different and the same applies to the satellites.

The theory shows that it is difficult for a planetesimal is the size of 1 km. But then, to avoid fragmentation by collision, a body needs to be 1000 km enough gravity to hold the debris of a collision.

But the main message is that the solar system is a family. planets have been acquired in long intervals after the Sun was born. Thus, for signatures isotope in the solar system is something like DNA testing. family ties can be established, but do not have anything to do with the Sun!