It would seem that in the Universe can be arranged easier and more reliable than our Solar system . A crucial role is played by force of gravity; the motion of each planet around the Sun is subject to clear and unambiguous laws – the laws of Kepler; this movement is almost the same, common to all planets, except Pluto’s, the plane.
In reality things are not so simple. The fact is that on each of the planets of the Solar system is not only the power of solar gravity, but the force of attraction of the other planets. This pull causes disturbances in the movement of each of the planets of the Solar system. Several planet deviates from its normal path prescribed by the laws of Kepler, however, every time returning to it. When you consider that the mutual position of the planets of the Solar system changes all the time, it becomes obvious that the overall picture of their movement very difficult.
And so the question arises. If the perturbations of the planetary movements of the Solar system lead to irreparable disaster? Where is the guarantee that whenever getting off the rails invisible space, the planet will return to a “native” orbit? But if the deviation is too large? And if all this “inside buildup”, a kind of vibration, to cause Ravalomanana system? Continue reading
Astronomers at the Australian national University has discovered the largest known planetary systems. Therein, except for the Central star has a large planet.
This planet makes a complete revolution around the sun in nearly a million years. This gas giant is at a distance of one billion kilometers from the star, which exceeds in 140 times the distance between Pluto and the Sun. Reported by the BBC.
Thus far, there are only a few of these planetary systems.
The exoplanet, which received the designation 2MASS J2126-8140 has a lot of 12-15 Jupiter. It was discovered in the programme of observations of young stars and brown dwarfs in the immediate galactic environment of the Sun. Astronomers came to realize that they see not two independent object at the same distance from the Sun is about 100 light years away, a planetary system.
“We were very surprised by the discovery of an object with such a relatively small mass so far from the Central star. Unlike Solar, this system could not occur from a huge gas-dust clouds,” says Dr. Simon Murphy from the Australian national University. Continue reading
The dust and ion tails of comet Hale-BOPP
But, in spite of research that freedom from prejudice was very slow: for example, Louis XIV was afraid of the comet of 1680 year, because it’s considered a portent of his death. The greatest contribution to the study of the true nature of comets was made by Edmond Halley. His main discovery was the establishment of the frequency of appearance of the same comet in 1531, 1607, 1682 Passionate about astronomical research, Halley became interested in the movement of the 1682 comet and calculate its orbit. He was interested in the path of its movement, and since Newton had already conducted similar calculations, Halley turned to him. The scientist immediately gave the answer: the comet will move in an elliptical orbit. At the request of Halley Newton presented his calculations and theorems in the treatise “De Motu”, that is “On the move”. Having the assistance of a Newton, he was engaged in calculation of cometary orbits by astronomical observations. He managed to collect information about the 24 comets. Thus appeared the first catalog of cometary orbits. In its catalog Halley found that three comets are very similar in their characteristics, from which he concluded that it’s not three different comets, and the periodic appearance of the same comet. The period of its occurrence was equal to 75.5 years. She was subsequently named Halley’s comet. Continue reading