Pole of Uranus switch places every day, I find astronomers

© NASAСнимок of Uranium made by the probe Voyager 2 in January 1986Pole of Uranus switch places every day, I find astronomers© NASA

Magnetic field of Uranus has been extremely unusual and unstable, but it’s no giant changes its pole of places every day, say scientists in an article published in JGR: Space Physics.

«Our observations show that the magnetic shield of Uranium is not static and its position is strongly affected, in addition to all other factors, from how it rotates around its axis. This radically distinguishes Uranus from Earth or any other planets in the Solar system,» said Carol Paty (Paty Carol) of Georgia Institute of Technology in Atlanta (USA).

Uranus is the only planet in the Solar system that rotates «lying on its side», the axis of rotation lies in the plane of its orbit. At the same time, the magnetic poles of Uranus are shifted from the geographical to the angle of 60 degrees. On Earth, this deviation is only 11 degrees, which allows you to use a magnetic compass to determine direction on a geographical pole.

Scientists believe that the shift of the magnetic poles is that the magnetic field of the planet generates a salty ocean hidden under its dense atmosphere. The reason for this shift and why the planet rotates on «its side», as planetary scientists now believe, was a series of powerful clashes of Uranium with a large «germ» of the planets in the distant past.

Pati and her colleagues have discovered another unusual trait of the magnetic field of Uranus, trying to reproduce how the magnetic field and the atmosphere of the giant planet interacts with the solar wind. These unusual data that scientists still could not explain, was obtained in 1986 when by Uranium flying probe «Voyager 2», received the first pictures and scientific data about the planet-the giant and its satellites.

The singularity of these data was the fact that it tells the astronomer that the atmosphere of Uranus in one of the days was «closed» magnetic shield, and not bombarded by solar wind particles, and the other was completely defenseless against his head.

Trying to understand how such things could happen, the authors created a computer model of the subsoil of Uranium, given the data from «Voyager-2», and calculated how a change in its magnetic field over time.

These calculations led to extremely unusual results. It turned out that at certain times of the year such as the winter or summer solstice, the magnetic field of Uranus looks like a kind of giant «switch», switching the position of the poles of the planet every 18 incomplete hours, exactly one day on Uranus.

These shifts, as they say scientists, give rise to a sort of «hole» in the magnetic shield of a giant planet whose birth is recorded by the probe «Voyager-2» thirty years ago. Similarly, according to the Party, you can behave and the other planets similar to Uranus, dozens of which were opened in recent years, the «Kepler» telescope and other observatories.

Therefore, the study of Uranium, including the new probes could be key to understanding how these planets and whether life can exist on their satellites if they are within the «zone of life», the scientists conclude.