“Our observation was aimed at studying the chemical composition of the comet Tempel 1,” says Michael Mumma (Michael Turner) from space flight Center NASA Goddard (NASA Goddard Space Flight Center). The Mumma and his colleagues used a powerful telescope, the Keck Observatory in Hawaii for a detailed analysis of the light emitted by the gas of the comet at the moment of impact. Since each type of atoms and molecules has its own characteristic frequency of radiation, on the basis of this, scientists were able to determine the chemical composition of the comet’s nucleus.
Comets are blocks, which consist of ice and dust that move in elongated orbits. It is believed that the nucleus of the comet is gas and dust formations, remaining after the formation of the main bodies of the solar system.
When approaching the Sun, its radiation heats the comet’s nucleus, releasing dust and gas. The latter form a coma (cloud around the nucleus) and one or more tails. Repeated heating leads to the fact that disappear from the surface of the substance having a low boiling point. In fact, the nucleus of a comet is formed “crust” that is different chemically from its internal regions. This makes it difficult to determine the true composition of the comet just by studying the gas in its tail. Continue reading
Our universe is huge, and it seems to us that more of the globe there can be nothing, but it is not. There are planets much larger and more massive. For the whole of the Universe our Earth is just a grain of sand lost in her. The solar system is only one element of the Galaxy. The sun is the main component of the Galaxy. Eight planets revolve around the Sun. And only ninth – Pluto – due to its gravitational forces and the mass deduced from the list of rotating planets. Each planet has its own parameters, density, temperature. There are those that are composed of gas, there are giant, small, hot, cold, dwarf.
So what is the biggest planet known at the moment? In the spring of 2006 an event occurred that shook the theory about the heavenly bodies. In Rovellasca Observatory (USA, Arizona) in the constellation of Hercules was discovered a huge planet beyond our Earth twenty times. Existing outdoor today it is the largest planet in the Universe. She’s hot and like the Sun, but it’s still a planet. It was called TrES–4. Continue reading
One hundred years ago the world was captivated by the idea of the existence of a ninth planet in the composition of the solar system. But today, in the year 75-year-old.
…Pluto, astronomers around the world have for that “little” romantic feelings…
The existence of a ninth planet in 1905, predicted the American Percival Lowell, famous for his search for a civilization on Mars. According to the calculations of Lowell, beyond the orbit of Neptune is another large celestial body, having a direct connection with the solar system.
Lowell noticed deviations in the motions of Uranus and Neptune from calculated orbits and decided that this is due to the influence of more distant planets. The object of his hypothesis, Lowell called planet X, but its “real” opening it, alas, did not survive. Continue reading