About the discovery of the ninth planet of the Solar system two astronomers from the California Institute of technology in Pasadena became known on January 20. One of them — the native of Russia Konstantin Batygin — spoke about the search for Planet X, the difficulties with the title the new heavenly bodies and unsolved mysteries of the Solar system.
What is an open planet?
Konstantin Batygin . She falls into the category of dwarf planets. This celestial body is quite massive. Our model gives a mass of about ten earth, this planet is just a giant. Now it is defined as a celestial object whose gravitational field is dominant in that part of the Solar system.
In General, there is not even a question: it’s a planet or not. We know about it, because its gravity affects the orbit of the farthest objects in the Kuiper belt. The very mathematical modeling relies on the fact that this planet has enough mass for gravity to dominate in the Solar system. Continue reading
Astronomers have determined that comets from the far reaches of our Solar system do not threaten the Earth. The discovery was made after computer modeling of the behavior of these objects. Article researchers appeared in the journal Science, and its summary is provided in the press release of the University of Washington, where the authors of the article.
In their study, the astronomers modeled the penetration into the inner part of the Solar system comets from the Oort cloud — a region whose borders, according to various estimates, are spaced from 2 to 50 thousand astronomical units. The temporal interval was modeled astronomers, was about 1.2 billion years.
Previously, scientists were convinced that the majority of comets with a long period (from 200 to millions of years) period of treatment, currently there are about 3200, with the outer part of the Oort cloud. It was believed that comets from the inner part of the cloud protects the Solar system gravitational field of Saturn and Jupiter, which do not allow these bodies to “annoy” the Earth and other small planets. Continue reading
Solar system — the planetary system that includes a Central star — the Sun — and all the natural space objects orbiting the Sun. It was formed by gravitational contraction of the dust cloud around is 4.57 billion years ago. Note: the sun is not a planet.
Planets of the solar system in order:
Click on the button above. to start an interactive 3D map of the planets of the solar system (opens in new window)
Pluto is the decision of the MAC (international Astronomical Union) no longer applies to the planets of the Solar system, and is a dwarf planet and even inferior in diameter another dwarf planet Eris. Designation 134340 Pluto.
Scientists have put forward many versions of the origin of our Solar system. In the forties of the last century Otto Schmidt put forward the hypothesis that the Solar system arose because the cold dust cloud attracted by the Sun. Over time the cloud formed the foundations for future planets. In modern science it is theory that Schmidt is the principal. Continue reading