Ticho Brague (1546 - 1601). Ticho Brague was the greatest astronomer-observer, an outstanding scientist and a designer of astronomic tools. He founded the first European astronomic centre, where the great amount of the work was carried out during 20 years. ... The astronomical observations of Ticho Brague seemed a pastime for his contemporaries, appeared to be a basis of the modern law of gravitation. ...
. The solar wind - the solar corona’s plasma pouring out into the interplanet space. The average speed of the solar wind particles (photons and electrons) is about 400km/sek, the particles number is several tens in 1 sm^3. Back .
. The solar time is a time determined by the Sun's hour angle changing. There is a true solar time and a medium solar time depending on what the Sun (true or mean) the time counting is made. Back .
The Solar spots - are the dark formations on the Sun's disk. ... The greatest observed spot is 100 thousand kilomiters. The spots are the places of the magnetic fields' getting out to the solar atmosphere. ... That's why they look so dark . ... The Solar convection zone is the layer with the thickness of 150 - 200 thousand kilomiters, situated under the photosphere; the substance of this layer being in convectional movement transformes the energy from inside the Sun's to its surface. ...
. The solar constant is a summary flood of the solar radiance crossing the single platform, perpendicularly to the beam direction and being far from the Earth atmosphere 1a.n. from the sun. The solar constant is about 1370 W/m^2. Back .
. The solar activity is a regular occurrence in the sun atmosphere of some formations the solar spot, torches in photosphere, bursts in the chromosphere and prominences in corona. The cycle of the solar activity is about 11 years. If influences the many terrestrial processes. Back .
The stone meteorites. The nickel iron compound is in the most stone meteorites that is why the space stones are heavier than the terrestrial ones. But their main minerals are silicates (olivine and pirogues). The characteristic of the main type of the stone meteorites - hondrits - is the round formations into them - so called “honds”. ... Their origin is not clear yet. The internal structure of the stone meteorite . Back . ...
. A star time is an astronomic time counting where the day and the night duration is equal to the period of the Earth rotation around its axis relatively to the system of stable stars. 24 star hours are equal to 23 hours 56 min. 4,091 sec. of the medium solar time . A star time at the given moment is equal to the hour angle of the vernal equinox point in the place of observation. Back .
The stars. The Stars - are the shining (plasma) spheres like the Sun. ... The star’s masses M are from 0,04 to 60 л ¤ , luminary (L) from 0,5 to hundreds thousand L ¤ (see later). ... On the definite step of the stars evolution the stars come through the period of nonstationarity (see "nonstationary stars" ). Depending on mass the stars become at the end of evolution the white dwarfs or the neutron stars or the black holes . ... The supernew stars. ... The nebula Loop of the Swan . ...
The stars evolution is a change with a caurse of time the physical characteristics and the cemical composition of the stars. The stars evolution on the base of physical characteristics composition is investigated when the stars are at the different steps of evolution. ... The star evolution is going in the compact double star system in its own ways. Back . ...
The unique object SS 433. ... First before 1978 it was not so interesting, but American and Italian scientists registrated three emission lines system of hydrogen and helium. ... One of its components is a massive star with temperature about 30 thousand Kelvin’s and luminance about million times more then the Sun’s one. ... The SS 433 modern picture includes the giant star with high temperature and luminance as well as its satellite. All the system is cored by plasma as by corona. ...
. The medium solar time determined by the equatorial Sun's hour angle changing. The equatorial Sun is a false point, uniformly moving along the celestial equator having the average velocity of the Sun's moving along the ecliptic. Back .
. Spicules in the solar chromosphere are the separate columns of radiant plasma, seen in the monochronical light (in the spectrum lines H, He, Ca+, etc). Their height is 6 -10 thousand kilomiters, their diameter is 200 - 2000 km, the time of life 5 - 7 minutes. There are several hundred thousands spicules on the star. Back .
The sky inhabitants - the constellations. ... The constellations of Zodiac. The constellations of Zodiac are very popular. ... They were counted from the point of vernal equinox. ... As a result all the Zodiac row of constellations as if displaced in the two positions the count traditionally begings from the constellation where the point of a vernal equinox is. ... That is why the Sun comes to each Zodiac sign two - five weeks before the time when it comes to the constellation of the same name. ...