The world of the unknown - Onua.org

The orbits of most of the numbered minor planets (98%) are located between the orbits of Mars and Jupiter. Their mean distances from the Sun ranges from 2.2 to 3.6 A. that is, They form the so-called main asteroid belt. All the small planets as big move in the forward direction. The periods of their circulation around the Sun are depending on the distance from three to nine years. It is easy to count, that the linear speed of approximately 20 km/S.

Asteroids is a small celestial body in size from a few metres to thousands of kilometres. In General, between them and meteoric bodies there is no clear difference. The number of such bodies in the Solar system more than they do less. Many scientists believe that most meteoroids are chips of asteroids. Asteroids, and meteorites consist of iron, Nickel and various stony rocks. They are close to the planets of terrestrial group.

The beginning of the 19th century. In Palermo, in Sicily, Italian astronomer by gioseppe Piazzi for many years led the observations of the positions of the stars for compiling star catalogue. The work was nearing an end. And now, the first night of the XIX century, on 1 January 1801, Piazzi discovered in the constellation Gemini weak star, with a brightness of about 7m, which for some reason was not in its own directory or in the directory Christian Mayer available to Piazza.

Asteroids first gave the names of the heroes of the Roman and Greek mythology, and then discoverer have the right to call it whatever you like, though his name. At first, the name was given only to women. Only asteroids with unusual orbit, got men (for example, Icarus, coming closer to the Sun, mercury). After, and it has ceased to be respected.

All open still asteroids have direct movement: they move around the Sun in the same direction as the large planet (i<90 degrees). The vast majority of asteroids orbit is not very different from each other: they are poorly eccentric and have a low or moderate slope. That is why nearly all the asteroids move, remaining within toroidal rings. The section of the ring plane zr, perpendicular to the Ecliptic plane and passing through the Sun.

Almost 3/4 of a century had no idea that not all the asteroids move between the orbits of Mars and Jupiter. But early in the morning of June 14, 1873 James Watson at the Observatory Ann arbor (USA) discovered the asteroid 132 Aarto. This object was able to track only three weeks, and then lost it. However, the results of determination of the orbit, though inaccurate, convincingly showed that the perihelion Aarti is inside the orbit of Mars.

How to reach Mars within a month? For this you need to give the spacecraft good momentum. Alas, the best available person - fuel nuclear gives specific impulse 3000 seconds, and flight stretched on for months. But do you have any on hand for something more energetic? Theoretically there: thermonuclear synthesis; it provides the impetus to hundreds of thousands of seconds, and the use of antimatter will get a boost in millions seconds.

Planck character of the spectrum of the CMB is the evidence of the last state of local thermodynamic equilibrium (LTE) between quanta and cosmic plasma. This condition allows you to build a detailed thermal history of the early Universe with the indication of the characteristic stages, when there was a change of qualitative structure of matter due to interconversion of different kinds of elementary particles.

The probability that the Earth will collide with an asteroid, is one chance out of 250 thousand. This is the official evaluation of scientists from the American space Agency NASA. But scientists say that in fact this is quite a high probability.

"Man cannot solve the problem, thinking the same way that gave it birth". So argued albert Einstein. Cosmologists adhering to the Big Bang theory, clearly demonstrate the effect of this principle. They dogmatically insist that their "scientific" theory reliable, but it is assumed that science must deal not infallible doctrine, but testable hypotheses.

TYC 8241 2652 1, the star of spectral class Q2, distant from Earth at 450 light-years, made a real circus: the surrounding gas-dust disk was glowing in the infrared range all the time observations, and then suddenly disappeared.

American and European astrophysicists were able to see the thread of dark matter, connecting galaxies Abell 222 and Abell 223, distortions in the radiation from distant stars, caused a huge mass of gas thread between these entities, according to a paper published in the journal Nature.

A neutron star x-ray pulsar in the constellation Carina, was born in the explosion of a supernova. But she did not remain pulsating "heart" of the center of the nebula, and was "expelled" into space with enormous speed. The age of the pulsar is equal to 10-20 thousand years, and this event occurred at a distance of 8-10 kiloparsecs from the Sun...

American astronomers have discovered a process that long ago figured among the possible options for the extinction of life on Earth. The unique opportunity presented by astronomers using the Hubble telescope, which observed the sun in the constellation Fox that 63 light years from us...

June 28, the American spacecraft Cassini passed by the time tefii - moon of Saturn diameter of 1 062 km, which is almost entirely made of ice.