... 2006 February 22 . An Unusually Smooth Surface on Saturn's Telesto . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: Why is Saturn's small moon Telesto so smooth? ... Telesto orbits Saturn always just ahead of the much larger moon Tethys . Pictured above , Telesto's unusually smooth surface was found to show some large craters and boulders , but not the high density of craters found on nearby Tethys or most other Saturnian moons. ... About APOD | ...

... September 25, 1997 . T Pyxidis: Recurrent Nova . ... Explanation: What happens when a thermonuclear blast occurs on the surface of a white dwarf star? ... Like other binary star systems which produce nova outbursts , T Pyx is composed of a dense white dwarf and a close companion star. An outburst occurs when the temperature and density of the sea of matter dumped from the companion onto the surface of the white dwarf reach the nuclear flash point for hydrogen . ... About APOD > . ...

Supernova 1987A in LMC . One day in 1987, an astronomer by the name of Ian Shelton was making observations of the Tarantula Nebula in Large Magellanic cloud at Las Campanas Observatory, and he noticed something strange on his image. ... SN 1987A got as bright as 2.7, the only other recent SN even to come close was 1885A in M31 which got up to mag 6. ... Mag 4.5 . ... IAUC 4318 2/25/87 Type II? ... IAUC 7354 2/1/00 New structure in the inner ring . ... IAUC 7360 2/7/00 HST observation of new spot . ...

. Первая Бюраканская Международная Летняя Школа для молодых астрономов "НАБЛЮДАТЕЛЬНАЯ АСТРОФИЗИКА". КАЛЕНДАРЬ КОНФЕРЕНЦИЙ 2006 ГОДА . FIRST BYURAKAN INTERNATIONAL SUMMER SCHOOL FOR YOUNG ASTRONOMERS "OBSERVATIONAL ASTROPHYSICS". "ТЕСНЫЕ ДВОЙНЫЕ ЗВЕЗДЫ В СОВРЕМЕННОЙ АСТРОФИЗИКЕ", приурочена к 100-летию известного исследователя двойных звезд, проф. Д.Я.Мартынова. «ЗВЕЗДНЫЕ СИСТЕМЫ», посвященная 100-летию со дня рождения П.П.Паренаго . "АСТРОНОМИЯ 2006: ТРАДИЦИИ, НАСТОЯЩЕЕ И БУДУЩЕЕ" .

... Отмеченная наградами АстроТоп-а . ... 1) К участию в конкурсе допускаются все российские сайты на тему астрономии и космонавтики, и все русскоязычные сайты за пределами России. ... II) Сайт года . ... Победитель: Астронет - http://www.astronet.ru/ : подано голосов экспертов - 109 (всего - 129) . ... 3-е место разделили: Астрономия и Телескопостроение - http://www.astronomer.ru/ и Лента новостей космонавтики от Железнякова - http://www.cosmoworld.ru/spaceencyclopedia/hotnews/ : подано по 37 голосов; ...

... The distance scales of the objects are matched both by comparing the first derivatives of the angular velocity determined separately from radial velocities and proper motions and by the statistical-parallax method. ... Good agreement between the inferred 0 and our calculations based on space velocities suggests that the Lindblad relation holds throughout the entire sample volume. ... Brandt and Blitz (1993) published the distances and radial velocities for a total of 206 H II-regions. ... Astron. ...