Sternberg Astronomical Institute, Moscow University, . Moscow, Russia . Supernovae make us brighter .. Search russian astronomical resources . Mirror of International Supernovae Network ( Original site ) . Catalogue of Supernovae Stars . HTTP access to SAI Catalogue of Supernovae Stars . SAI SN Light Curves Online . ... Sternberg Astronomical Institute ( in Russian ) . ... Astronet - Russian Astronomical Network . ... Russian Foundation for Basic Research . ...

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... 27.12.2001 . ... Credit Copyright: Courtesy Adam Block ( KPNO Visitor Program ), NOAO , NSF Explanation: The Crab Nebula is cataloged as M1, the first on Charles Messier's famous list of things which are not comets. In fact, the Crab is now known to be a supernova remnant, an expanding cloud of debris from the explosion of a massive star. ... December 2001 . ... Publications with keywords: Crab Nebula - M 1 - supernova remnant . Publications with words: Crab Nebula - M 1 - supernova remnant . ...

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... STScI-PRC95-11 FOR RELEASE: February 20, 1995 HUBBLE'S CLOSE-UP VIEW OF A SHOCKWAVE FROM A STELLAR EXPLOSION This image shows a small portion of a nebula called the "Cygnus Loop." ... Blue shows emission from "doubly ionized" oxygen atoms (atoms that have had two electrons stripped away) produced by the heat behind the shock front. ... This sulfur emission arises well behind the shock front, in gas that has had a chance to cool since the passage of the shock. ...

... Dark energy is believed to be a component of the Universe whose repulsive gravity is presently accelerating the expansion of the Universe.€а Although it comprises the bulk of the mass-energy of the Universe, its nature is not well understood.€а €аAlbert Einstein originally suggested its existence about 80 years ago. A supernova is the explosive death of a star, which unleashes a burst of light through the cosmos. ... This website is a gift from Nancy Riess . ...

... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Crab Nebula exploded in 1054 . ... While the Crab Nebula's location in the sky agreed very well with the reported position of this bright new star, several studies of the expanding cloud of stellar debris unexpectedly indicated that it was expanding much too fast to be associated with a supernova explosion in 1054. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... This image of the Tarantula Nebula comprises one of the largest mosaics ever assembled from Hubble photos and includes observations taken by HubbleтАЩs Wide Field Camera 3 and Advanced Camera for Surveys, combined with observations from the European Southern ObservatoryтАЩs MPG/ESO 2.2-metre telescope which trace the location of glowing hydrogen and oxygen. ... Subscribe to Astronotes . ...

... A brief look at Sakurai?s Object . ... Sakurai?s Object (V4334 Sagittarii) was discovered on the 20 th of Febuary 1996 by a Japanese astronomer Yukio Sakurai. ... Initially astronomers thought it to be a nova (an explosion on the surface of a white dwarf). ... When it failed to show any hydrogen emissions from the star, the charateristic of a nova, they realised that this was a very interesting star. ... Sakurai?s object was in fact a white dwarf when it went through this last helium burst. ...

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