What we have become the most interesting and sometimes frightening?Mystery.Unexplored.Inexplicable.And it's absolutely every area.Even space.Or rather, especially space.Since space is fraught with a myriad of unanswered questions and frightens us with its unpredictable and unexplored.One of these, attracting mysteries is Pluto - the planet most distant from ours, the solar system, discovered in the 1930th.Although later, studying the older pictures, dating to 1914, this planet seen again.
observations, which are now underway, to provide enough knowledge to even to determine: Pluto - the planet, or not?It looks like a star with pyatnadtsatizvezdnoy value.Mars, perhaps, too, would like shine, he is at the same distance from us.This means that Pluto may have a size of Mars.A more accurate estimate of the diameter of the planet gave 1950th.J. Kuiper managed to measure the angular diameter equal to, according to his testimony, 0 "23. If the" transfer "to our measurements, the diameter will be 2,900 km.
In 1968, from April 28 to 29th, 12Observatories waited Pluto will pass another star, his equal in magnitude. The idea is that if the Kuiper made no mistake in the size of Pluto was supposed to close it. But the luster has not weakened. This shows that Pluto is a diameter of no more5500 km. The mass of Pluto was even more difficult to calculate. Satellites he had, comets around it is not passed.
American astronomer R. Duncombe, P. Seydelmanom E. Jackson and the Polish astronomer V. Klepchinskim has done a tremendous job they have processed 5426observations on the Status of Neptune for the period from 1846 to 1868 years, and found out: the mass of Pluto, with respect to the earth is 0.11. That same mass of Mars, but Pluto is less than Mars. Having to him for him to calculate the mass, diameter of about 5500 km,and obtain an average density of Pluto - 8 g / cm ^ 3, and in fact it is too much.In 1978, George. Christie makes an unexpected discovery: he finds in old photographs Pluto.The discovery confirmed the four-meter reflector Observatory in Cerro Tololo.This appeal helped the satellite and determine the mass of Pluto: 1.1 10 ^ 25 g, and it is - 1/500 of the mass of our Earth!And these calculations allowed to make a new application: Pluto among the planets of our system is the smallest!
Well temperature, in theory, be it about 40 K. At this temperature there is condensation of methane.This means that methane ice may well be on Pluto.The observations in 1977 confirmed the assumption: the infrared spectrum has allowed, finally, consider the characteristics of the strip.Earlier, in 1970, using a 60-centimeter reflector strips were found similar to traces of iron absorption.In 1930th, March 12, there was another message: long-term exploration and research Lowell interested planet located beyond Neptune, led finally to the discovery of a new, unknown object, the trajectory and speed of its seven weeks corresponded to the body, consistently found beyond the orbit of the planetNeptune, at a distance, said Lowell, magnitude - fifteenth.Soon celestial world, it was decided to give the name of the planet - the planet Pluto, the most suitable to her, since the movement of the planet took place in dark, the outer regions of our solar system.The first two letters are used in the title - the initials Persivallya Lowell, who claimed the existence of an unknown planet yet who died a year after the published predictions.
discovery of Pluto could take place in 1919.Intervened accident.Then Milton Hyumansonom were made calculating the possible position of the planet, photographed the area of possible its position and obtained images of the planet.On the part of the image hit the emulsion and prove the existence of a celestial body has not been possible.The planet Pluto is waiting to be discovered ... Already in the 1930th, reliably knowing about the existence of Pluto and its orbit, it is possible to identify the images taken earlier.
