... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2004 February 21 . The Spiral Arms of NGC 4622 . ... Explanation: While stirring a morning cup of coffee and thinking cosmic thoughts many astronomers would glance at this Hubble Space Telescope image of spiral galaxy NGC 4622 and assume that the galaxy was rotating counterclockwise in the picture. ... About APOD | ... NASA Official: Jay Norris. ...

... February 3, 1998 . A Magellanic Mural . ... Explanation: Two galaxies stand out to casual observers in Earth's Southern Hemisphere : the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). ... Recent observations of the LMC (on the left) have determined that it is on a nearly circular orbit around our Galaxy, and have even helped in the determination of the composition of dark matter in our Galaxy . ... About APOD > . ...

... Fractal Interstellar Dust Up Close . ... But nobody really knows what a typical interstellar dust grain looks like. ... The above picture shows the result of a fractal adhesion model for dust grains involving random conglomerates of spherical compounds of different properties, here artificially highlighted by different colors. ... Publications with keywords: dust - interstellar dust . Publications with words: dust - interstellar dust . ... The Trifid Nebula in Stars and Dust . ...

... Comet Ikeya-Zhang, designated C/2002 C1 (Ikeya-Zhang), is named after Kaoru Ikeya of Shizuoka prefecture, Japan, and Daqing Zhang of Henan province, China, who independently discovered it on the night of 1 February 2002. A preliminary orbit reported the following day indicated that it would come moderately close to both the Earth and the Sun and that it might become visible to the naked eye during late March and April 2002. ... Bailey, M.E., Clube, S.V.M. and Napier, W.M. The Origin of Comets . ...

... The first task assumes the searching for chemical composition and sizes of particles which give the wavelength dependence of the extinction efficiencies close to the observed dependence of . Figure 7: Wavelength dependence of the extinction efficiency factors for homogeneous spherical particles of different sizes consisting of astronomical silicate and amorphous carbon. The dashed segment shows the approximate wavelength dependence of the mean galactic extinction curve at optical wavelengths. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Space Flight . ... Earth Satellites . ... By admin February 19, 2011 Posted in: Comets and Asteroids . ... Since it was launched in 1999, the Stardust spacecraft has travelled about 5.7 billion km (3.5 billion miles) on its odyssey from Earth to comet Wild 2, back to Earth then on to comet Tempel 1. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Publications overview . ... Careers overview . ... MRO Support Facility . Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Current telescope status . ... Australia Telescope Online Archive (ATOA) . ... Scientific support of facilities . ... Astrophysics overview . ... Meetings . ...

... Circle area is proportional to the number of tweets + retweets tweets retweets . Order accounts: by user number (effectively random) by number of tweets (includes retweets) by number of followers by number of followers that also tweeted about AAS221 by number of friends that also tweeted about AAS221 . ... The top/left position is for the user with the largest number of followers, and the bottom/right is for the smallest number of followers. by number of followers that also tweeted about AAS221 . ...

... The effect of the bug has been that timestamps indicating when data was taken (FITS-header keyword CRVAL5) may be off by one second. ... DETAILED DESCRIPTION -------------------- AFFECTED KEYWORD: The affected keyword is: CRVAL5 (time stamp indicating start time of subscan) Synchronisation errors between the 1PPS pulses and the NTP-controlled system clocks have frequently caused the timestamps indicating the start of each subscan (CRVAL5) to be off by one second. ... That problem has also been fixed...

... Using the obtained above dependence of compact binary merging rates in the elliptical galaxy on time (Fig. ) and assuming the cosmological origin of GRB as products of binary NS/BH coalescences, we can compute the theoretical - curve. ... Figure: (Right panel) The 2-nd BATSE catalog (solid points) is fitted by the cosmological GRB model (from Lipunov et al. ... Note that the total GRB rate in the Universe is per year, 3 orders of magnitude smaller than the total binary NS merging rate. ...

... ESO Acronyms . ... Quasars and Black Holes . ... Black Hole at the Centre of our Galaxy . ... This view shows a simulation of how a gas cloud that has been observed approaching the supermassive black hole at the centre of the galaxy may break apart over the next few years. This is the first time ever that the approach of such a doomed cloud to a supermassive black hole has been observed and it is expected to break up completely during 2013. ... Milky Way : Galaxy : Component : Central Black Hole . ...

... RSS CHANNELS: ASTRONOMY February 23, 2006 Two New Moons--and Maybe Some Rings--for Pluto Adding to the growing compendium of Kuiper belt objects, astronomers have spotted two new moons orbiting Pluto. Observations with the Hubble Space Telescope from May of last year show two tiny dots revolving around the same center of gravity as the ninth planet and its largest moon, Charon. ... The moons may also be a source for dust that coalesces into rings around Pluto before dispersing. ... Or even rings. ...

Astronomy Discussion Forums . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... Discussion Forums . ... Math? ... Post Message | ... We assume that a intelligent race would use math and that math is the universal language. ... To assume that math will be the ultimate means of communication is a bit premature. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Laboratory of Stellar Physics . ... A study of close binaries with black holes, neutron stars and white dwarfs. ... A study of SS433 - the massive close binary with a black hole in the regime of supercritical accretion . ... A search for intermediate-mass black holes (IMBH). The black holes which are not supermassive black holes observed in quasars, and which were formed not in massive stars. ... A search for new magnetic stars, new CP stars, measurements of magnetic fields in stars . ...

Serguei LANDO (Poncelet laboratory, Moscow): Cohomology of Hurwitz spaces . The problem of studying the intersection theory on Hurwitz spaces naturally arises in connection with the Hurwitz problem. ... The study of the intersection theory on Hurwitz spaces has been initiated in [1,4]. We discuss a new approach to the intersection theory on Hurwitz spaces. ... 3] M. E. Kazarian, S. K. Lando, {\it On intersection theory on Hurwitz spaces}, Izv. ...

ESO PR 06/96; 16 February 1996 . ... In the early morning of January 31, 1996, Japanese amateur astronomer Yuji Hyakutake made his second comet discovery within five weeks. ... Information about some earlier comet encounters may be found in the Appendix at the end of this Press Release. ... By a straightforward extrapolation of the current brightness, it would appear that Comet Hyakutake will reach magnitude 1 on March 25, 1996, at the time of the closest approach to the Earth. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Steering by Different Stars? Astronomers and the Dark-Sky Movement . ... Photo courtesy of the International Dark-Sky Association. by Susan McGowan . ... According to Arthur Upgren, senior research scientist at Yale University and emeritus professor of astronomy at Wesleyan University, only 17% of ASP members were also members of the International Dark-Sky Association in 2001. ...