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The idea of a new planet being discovered in our Solar System is pretty exciting. Even more so because of the many theories about "planet-x" or "Nibiru" being associated with space aliens and the doomsday prophecies of 2012.
Scientists at places like NASA and famous observatories have deflected inquiries about the discovery for a few years now, mainly because they feared being associated with these "fringe" theories. But like it or not -- it has happened. Well... according to a team of Spanish artronomers who call themselves the StarViewer Team.
The group made the rounds of all the news web sites in the past two weeks, claiming they discovered something very significant. It's almost twice the size of Jupiter and just beyond our furthest planetoid, Pluto. Although it's not a planet, it appears to have planets or large satellites encircling it. It's what astronomers call a "brown dwarf star" and its official name is "G1.9".
What's a Brown Dwarf Star?
First we'll explain WHAT these astronomers have discovered. Then we'll discuss HOW they discovered it.
At the risk of being scientifically vague, I'll try to explain the current understanding of how stars and planets form in space.
All matter attracts other matter. A larger mass will attract smaller masses towards it. In space this results in growing clouds of matter that tend to clump together and attract more matter. Since most of the matter in space is gaseous, these clouds eventually get so dense that they collapse into dense gaseous spheres. When they do this there is usually some "left over" matter that forms a ring around the sphere.If there is enough matter in a sphere of hydrogen, for example, it can cause so much compression at the shpere's core that the hydrogen atoms begin to fuse together and a fusion-reaction ignites a new born star. In this reaction two hydrogen atoms join together to form one helium atom and release extra energy as radiation.
Scientists believe that the minimum mass needed to ignite a sun is about 13 times the known mass of the planet Jupiter -- written as "13MJ." If the mass is lower than this, the pressure in the core is not enough to ignite and the sphere will be hot ball of gas called a "brown dwarf."
As a new star spins, the disk surrounding it gradually cools and the matter forms heavier elements like metals and minerals. These "rocks" eventually clump together and form solid spheres called planets.
Sometimes a solid sphere will attract some of the gas that is in the disk and this will result in a gaseous giant, like Jupiter and Saturn, which has a solid core but a thick gaseous atmosphere. These "gas giant" planets can be very massive but, because of their solid cores, they will never ignite and become stars.
This Brown Dwarf
This newly discovered "brown dwarf" is believed to have formed from the same condensed matter that gave birth to our Sun. It is believed that, after the large planets formed around the Sun, they pushed it to the edge of the Solar system where it formed a sphere about 1.9MJ -- well below the mass needed to ignite it as a "sun."Many suns that we observe in the galaxy are part of binary systems or double stars. There is debate about how two suns form from a single condensed cloud of matter. Some believe that they both form at the same time; others believe they split following the creation of one huge sun.
Sometimes both spheres are capable of fusion and both suns shine brightly, encircling each other around an imaginary point call the barycenter. Sometimes only one sun attains 13MJ and ignites, while its smaller companion, the brown dwarf, glows dimly and radiates heat. Astronomers usually can only see the brightest of the two, but because they both circle around a common barycenter, the wobble reveals the mass of the unseen companion.
We are close to our Sun and within its gravitational influence. So as we are travel through space, it appears to us that the G1.9 is moving in an elipse between our furthest planetoid, Pluto, and the edge of our Solar system, near the Oort Cloud.The newly discovered brown dwarf is reported to be located just about 60 to 66 AU (1 AU=the distance from the Sun to Earth) from us (its parigee), currently in the direction of the constellation Sagittarius. Because of periodic gravitational disturbances in areas of space further out, specifically in the Oort Cloud, the Spanish group of astronomers believe G1.9 travels in an elliptical orbit extending possibly hundreds of AU beyond the furthest known planets (its apogee). Its position just beyond Pluto suggests it is at its closest approach to the Sun and Earth.
Space appears relatively free of debris [see image above] inside the planetary orbits. This is because the gravitational pull of each planet (a large mass) effectively collects the interplanetary debris (small mass). But there are exceptions. http://www.viewzone.com/browndwarf.html
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It's just people cashing in on the Nibiru/2012 rubbish.
stratosfear wrote:This story is A) pure fiction and B) two years old. The real G1.9 (or G1.9+0.3 to give it its full name) is 25,000 light-years away in Sagittarius and was discovered in 1985 by the VLA radio telescope.
It's just people cashing in on the Nibiru/2012 rubbish.
I'm sure i read somewhere that it went supernova to
What I usually do, is copy and paste a thread title like this into my search engine and see what it has to say.
On this title, "dwarf sun beyond pluto has been discovered"... Not ONE, not any, actual science nor any "proper" news sites are carrying this story... The only ones that are, are doomsday sites and conspiracy sites.... End of line... End of story...
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