... 2007 February 13 . Vela Supernova Remnant in Visible Light . Credit: Digitized Sky Survey , ESA/ESO/NASA FITS Liberator . ... About eleven thousand years ago a star in the constellation of Vela could be seen to explode , creating a strange point of light briefly visible to humans living near the beginning of recorded history . ... Remaining at the center of the Vela Supernova Remnant is a pulsar , a star as dense as nuclear matter that completely rotates more than ten times in a single second. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 9, 1999 . A Supernova Star-Field . Credit: Hubble Heritage Team ( AURA / STScI / NASA ) . Explanation: Bright stars don't last forever. ... The above picture is a composite of recent images taken over several years. The explosion originated from a bright massive star that ran out of nuclear fuel . ... About APOD > . ...

Supernova 2007sr in NGC 4038 . This page is devoted to information on Supernova 2007sr in NGC 4038 . ... Discovered by Catalina Sky Survey (USA). This one turned out to be the brightest northern hemisphere visible supernova of the year 2007. ... Icon generated from the discovery image. This supernova is in the Constellation Corvus . ... Catalina Sky Survey 's discovery page . ... SNWeb has a 2007sr page . ... Confirmation, mirror , mirror . ... JM Llapasset . ... 2008/01/06.208 . ...

New GCVS Versions for Three Southern Constellations Peremennye Zvezdy (Variable Stars) 27, No. ... We are currently working on a version of the General Catalogue of Variable Stars (GCVS) revised taking into account the new data accumulated since the 4th GCVS edition. ... It will contain all stars of the 4th GCVS edition plus a complete catalogue of the stars added to the GCVS in the Name Lists of Variable Stars Nos. ...

... 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; ...

... Here is a brief outline of the current theory of the events in the early history of the solar system: . A cloud of interstellar gas and/or dust (the "solar nebula") is disturbed and collapses under its own gravity. ... The gas cools off enough for the metal, rock and (far enough from the forming star) ice to condense out into tiny particles. (i.e. some of the gas turns back into dust). ... Once the larger of these particles get big enough to have a nontrivial gravity, their growth accelerates. ...