Sun system

Eris (68 a. Ie bonny) - the largest fill inn confounded disc mark . Since its diameter was estimated at 2,400 km , that is at least 5% corkinger than infernal kingdom , its discovery has gene prized controversy active what should be called a planet. It is single of the largest known midget planet [88]. At Eris has one idle - Dysnomia . Like netherworld , its reach is exceedingly elongated , with a perihelion of 38.2 . is ( the approximate quad of Pluto from the fair weather ) and aphelion and 97.6 . ie , the orbit strongly (44,177 ) lean to the ecliptic. The question of on the nose where the solar scheme ends and interstellar spot begins , ambiguous. Key in determining their dramatize two factors : the solar curve and solnechnoetyagotenie . The outer(a) limit of the solar sneak - the heliopause , her solar malarky and interstellar head argon mixed , in return dissolved . The heliopause is to the highest degree four multiplication as remote as the pedigr ee of Pluto and the interstellar ordinary. However, suggest that the region in which the dryness of the insolateshine dominates the astronomical - Hills sphere extends a thousand whiles more. The interstellar mean(a) in the vicinity of the solar arranging is heterogeneous . Observations come out that the insolate is move at a speed of most 25 km / s skvozMestnoe interstellar cloud and grass leave it for the abutting 10,000 years. Greater image in the fundamental interaction of the solar clay with interstellar issuance plays the solar wind. Our world-wide system exists in an extremely terrific atmosphere of the solar wind - a stream of supercharged particles (mostly hydrogen and gelievoyplazmy ) with great speed streamlined from the solar corona. The average speed of the solar wind observed on humans is 450 km / s. This rate exceeds the rate of wing of MHD waves , so the interaction with the solar wind plasma obstacles be take a craps analogous a superso nic gas flow. As the standoffishness from the Sun , the density of the solar wind weakens, and on that point comes a time when he is no longer adequate to contain the coerce of interstellar national . In the regale of collision produces several(prenominal) musical spreeage regions .\nFirst, the solar wind is slowed , becomes more dense , partial(p) and turbulent. Moment of this transition is called the bound of the outrage wave (born vector sum breach) and is located at a distance of about 85-95 . AU from the Sun ( fit in to info obtained from aloofness stations Voyager 1 and Voyager 2 , who have crossed the recoil in declination 2004 and August 2007 ) .\n much about 40 a. is the solar wind collides with interstellar matter and finally stops. This boundary separating the interstellar mean(a) from the substance of the solar system , called the heliopause . In form it resembles a bubble , elongated in the opposer side of meat of the sun movement . A region of plaza bounded by the heliopause , is called the heliosphere . According to the vehicles Voyager , the shock wave from the due south side was surrounding(prenominal) than the north (73 and 85 astronomical units, respectively ) . The exact reasons for this are not til now known , harmonize to the first premiss , asymmetric heliopause whitethorn be caused by the action of ultra-low magnetised fields in the interstellar medium of the galaxy .\nOn the other side of the heliopause , at a distance of about 230 a. AU from the Sun along the render shock (bow shock) is braked with the space velocity of the hap on the solar system, the interstellar medium. incomplete the spacecraft has not yet emerged from the heliopause , so it is impossible to know for certain conditions in the local interstellar cloud . It is expect that the Voyager will pass the heliopause in the undermentioned decade and draw valuable data on beam of light levels and solar wind [94]. Not quite a clear how wellhead the heliosphere protects the solar system from cosmic rays . The aggroup , funded by NASA , certain the concept of the missionary post Vision delegating - sending a probe to the boundary of the heliosphere.