Halo around the Moon. Halo arises when the light beams refracted on the high clouds icy chips ina form of a six side prism. As a result we see a small halo circle with a 22°-radius. The big circle is formed by the beams paased through the side edge and the base of prismochips. Its radius is equal to 46° (nearly). The big circle is observed rarely and is shining weaker but it is easier to observe it near the Sun, if comparing with the small halo invisible in the bright Sun light. ...
. The comet Gallea. The comet's core . Gallea is a historical comet. There were 30 approachings to the Sun from the 240 B.C. Returns every 75 - 76 years. In 1986 five space ships met the comet. "Vega-1", "Vega-2" (USSR), "Jotto", "Suisen" and "Sekigake (Japan). The "Vega" spaceships passed the comet's haed in 8000 km from the core, "Jotto" - 600 km. The solid core was registered (16*18 km). The next time this comet will appear in 2061 . Back .
... October 10, 1604 a new star unknown before appeared in Snakebearer constellation. ... Mostly Kepler saw farther than Galilei , understanding that planets were influenced by the Sun. ... The most of all wonders is that I opened four new planets and observed their own movement and the movement according each other and according the other stars. These new planets are mooving around the other great star as well as Venus, Mercury, and perhaps the other known planets are moving around the Sun". ...
. Space vehicle "Galileo". An american spaceship "Galileo" performed an apparatus of a new gneration for Lupiter characteristics and detailed shooting of its satellites. Back .
Astronomy science . From the ancient days . The Stone Age . Ancient civilization . ... The Middle Ages Astronomy . ... Unusual occurrences in the sky . ... The greatest discoveries of the 20-th century . Solar system . ... The Sun Star . ... Mars without inhabitants . ... Solar and lunar eclipses . ... Stars.. ... Among the stars . The sky inhabitants - the constellations . ...
. Photosphere is the lower layer of the star atmosphere. The photosphere thickness is about 0,001 RD (200 - 300 km), density - 10^-9 - 10^-6 g/sm^3 temperature is decreasing upwards from 8 to 45 thousand K. Thesolar activity in photosynthesis appeared in the solar spots and torches. Back .
. Phobos - the satellite of Mars. Discovered by A. Hall (USA, 1877). The distance to the Mars is 9400 km, the sinodical period of rotation is 7 h 39 min 27 sec. The greatest length is 26 km. Back .
. The Dragon. The Dragon is a long constellation. It surrounds The Little Bear from the three sides. The Greek myth says that Ladon, the dragon, guarding the tree with golden apples killed the dragon. From the 3700 to 1500 year B.C. there was a North pole of the world near the a dragon. Back .
. The Dolphin. This constellation is a nice small group of stars between the Eagle and the Swan. It looks like a rhomb with a tail. According to the Greek mith the dolphin helped Poseidon to find his future wife - the sea nimph Amphitrita. For this deed he was placed to the sky. Back .
The Virgin. ... This is a double system with a long orbit and a period of 171 year. The maximum distance between them was 6" in 1925 and it will be 0,5" in 2011. The light of the each component is 3,5 of star value. Near the Virgin star r there is an interesting galaxy M 87 (or the radiogalaxy of the Virgin A) aproximetly the 9th star value. ... The most bright quasar (3C 273) lays in the Virgin, but it is able to see this quasar only in a big telescope. ...
. Daimos is the satellite of Mars. Discovered by A. Hall (USA, 1877) the distance to Mars is 23460 km. The sideric period of rotation is 1 day 6 h 17 min. Back .
Rene Decart - the first attempt to reconcile Galilei's and Kepler's ideas. ... Decart system was the first attempt to describe the origin of Universe without miracles and divinely wonders, he scientifically explained the planets turning to one side and in one plane and its coordinated rotation. Young Newton was meditating over Decart's ideas and Newton pointed out the planets as the celestial bodies, which "wandered" near the Sun in any directions. ...
. Boson (bose-particle) is a perticle or quasi particle with the whole spin, a system of indentified bosons is ordered to the statistic of Bose-Einstein. Back .