... 2008 August 11 . Black Hole Candidate Cygnus X-1 . ... Explanation: Is that a black hole? ... The Cygnus X-1 binary star system contains one of the best candidates for a black hole . ... Pictured above is an artistic impression of the Cygnus X-1 system. ... The bright star in the Cygnus X-1 system is visible with a small telescope. Strangely, the Cygnus X-1 black hole candidate appears to have formed without a bright supernova explosion . ... About APOD | ...

... 2000 January 10 . Brown Sun Bubbling . ... Our Sun is an extremely large ball of bubbling hot gas , mostly hydrogen gas. The above picture was taken in a specific color of light emitted by hydrogen gas called Hydrogen-alpha . ... The energy source of our Sun is the nuclear fusion of hydrogen into helium deep within its core. Astronomers are still working to understand, however, why so few neutrinos are measured from the Sun's core. ... About APOD | ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... We have compared visualized fields of GSC and USNO A1.0 catalog with unpublished photographic finding charts that were sent by L. Plaut to the compilers of the GCVS. ... 7-15 A9 --- GCVS GCVS or NSV name 17-25 F9.4 --- GSC GSC number 26 A1 --- NoteFlag *Nonstar (GSC) flag 28-29 I2 h RA2000GSC.h Hours RA (GSC), equinox 2000.0 31-32 I2 min RA2000GSC.m Minutes RA (GSC), equinox 2000.0 34-38 F5.2 s RA2000GSC.s Seconds RA (GSC), equinox 2000.0 40 A1 --- DE2000GSC.- ... Plaut, L., 1966, Bull. ...

THE 75th NAME-LIST OF VARIABLE STARS. ... The 75th Name-List consists of two tables. ... the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column Min gives, in parentheses, the amplitude of light variation; the symbol ( means that the star , in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used ( P are photographic ...

... 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; ...

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