... 2000 September 19 . M17: Omega Nebula Star Factory . ... Explanation: In the depths of the dark clouds of dust and molecular gas known as M17, stars continue to form. Visible in the above recently released representative-color photograph of M17 by the New Technology Telescope are clouds so dark that they appear almost empty of near infrared light . ... M17 's unusual appearance has garnered it such nicknames as the Omega Nebula, the Horseshoe Nebula, and the Swan Nebula. ... About APOD | ...
... 2000 September 6 . Emerging Planetary Nebula CRL 618 . ... ESAIC , HST , ESA , NASA . Explanation: CRL 618 may look to some like an Olympian declaring victory. ... Since then it has run out of core material to fuse and so has started to become a planetary nebula . In its current proto-planetary nebula phase, CRL 618 is evolving quickly, expelling hot gasses in complex jets and rings moving outwards faster than 700,000 kilometers per hour. ... About APOD | ... NASA Technical Rep.: ...
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 . ...
... 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. ...
General Catalog of Variable Stars (GCVS database, Version 2013Jun) . Samus N.N., Durlevich O.V., Kazarovets E V., Kireeva N.N., Pastukhova E.N., Zharova A.V., et al. ... General Catalogue of Variable Stars (Samus+ 2007-2012), VizieR On-line Data Catalog: B/gcvs . ... Query forms by files . The values in the input file must be separeted by comas or arranged in columns. ... Enter the file with the GCVS names: . ... Enter the file with the coordinates J2000.0: . ...
. Search the Web Usenet and Display the Results in Standard Form in Compact Form in Detailed Form as a Count only . Use only Advanced Query Syntax with AND , OR , NOT and NEAR . Simple Query Syntax will not work! . Results Ranking Criteria: documents containing these words will be listed first. If left blank, the matching documents will not be sorted. Start date: End date: e.g. 21/Mar/96 .
... 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. ...
... 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; ...
Shades of Deep Purple (USA: Tetragrammaton 1968 ; Europe: EMI Parlaphone 1968 ; Japan: Polydor 1968) (CD) . Deep Purple's debut album, recorded very hastily. ... Tracks: . ... Wring That Neck (Blackmore/Lord/Simper/Paice) . ... All tracks written by Blackmore/Gillan/Glover/Lord/Paice . ... Painted Horse (Blackmore/Gillan/Glover/Lord/Paice) . ... Child in Time (Live, 690924) (Blackmore/Gillan/Glover/Lord/Paice) . ... Bonus tracks on Japanese CD: Lazy (edited) (Blackmore/Gillan/Glover/Lord/Paice) . ...