Comets: the oldest inhabitants of the Solar system
J. L. Lagrange (1813) was also based on firmly established facts – the presence of comets that definitely move in elliptical orbits, including short-period. He explained the origin of comets gigantic volcanic explosions – emissions (eruption) with giant planets. It is, in principle, could explain the nature of the orbits of short-period comets. Subsequently, the views of La Grange shared and developed a number of scientists, among which the most important contribution of the Soviet astronomer S. K. Bo, who worked in this direction with the 20-ies to 80-ies of our century. He has eliminated the biggest internal difficulty is the concept of Lagrange – the necessity of the ejection of cometary masses (nuclei) with the “surface” of the giant planets with their powerful gravity fields, the overcoming of which requires an initial speed of 60 km/s and more. Giant planets also have thick (the length of many thousands of miles) and very dense atmosphere, in the middle of the twentieth century has been very problematic the very existence of a solid surface planets – giants beneath these atmospheres. Continue reading
The Antares rocket with the space vehicle-truck Cygnus was launched from wallops flight facility in Virginia on the US East coast. This is the second flight of Cygnus to the International space station and the first of eight scheduled flights that are under contract with the National Agency of Aeronautics and space will carry out a private firm Orbital Sciences.
The docking of Cygnus with the International space station is scheduled for Sunday, January 12th. The ship will deliver to the station’s scientific equipment, as well as clothing and food for the ISS crew.
Initially, the launch of Cygnus was scheduled for December 19, but the launch was postponed for technical reasons.
The launch was performed the next day after NASA announced the decision to extend its participation in the ISS project until 2024, that is four years longer than previously planned.
Today, however, flights of private vehicles is not a novelty. The first launch of “private owners” was completed on may 22, 2012, then the Dragon spacecraft headed successfully to the international space station. American South African-born entrepreneur Elon Musk, sold in 2002, he created PayPal, decade put to private ships plied the space. It took him less than $1 billion of private investment to a hitch, which NASA refused for lack of funds. Continue reading
Scientists shared their impressions
21 January 2016, two scientists from the California Institute of technology, Professor Mike brown and Professor Konstantin Batygin has officially announced that they have found a ninth planet in our Solar system. According to their mathematical models, it is a gas giant like Uranus or Neptune, the mass of the discovered planet 10 times the mass of Earth, it rotates in an orbit 20 times larger than the earth and it requires from 10,000 to 20,000 years to make one complete revolution around the Sun. However, very reliable model of scientists has demonstrated and existing telescopes have not yet managed to see her.
Scientists have been very mixed on the nature of their activities and perhaps that is why they have achieved such amazing results. So brown has increasingly resorted to methods of observation and explores distant objects in our Solar system, whereas Batygin relies more on the laws of physics and mathematical calculations. Apparently, that tandem allowed the researchers to calculate the so-called ninth planet. Continue reading