... The Clouds of Orion the Hunter . ... Cradled in cosmic dust and glowing hydrogen, stellar nurseries in Orion the Hunter lie at the edge of giant molecular clouds some 1,500 light-years away. ... Volcano of Fire Erupts Under the Stars . ... Galaxy and Cluster Create Four Images of Distant Supernova . ... Stars at the Galactic Center . ... Near the outskirts of the Small Magellanic Cloud, a satellite galaxy some 200 thousand light-years distant, lies 5 million year young star cluster NGC 602. ...

Еще в разделе: (Показать все результаты (>135472) - www.astronet.ru/ )

... 2001 February 22 . 3C294: Distant X-Ray Galaxy Cluster . ... This Chandra Observatory image centered on a radio galaxy cataloged as 3C294 indeed reveals the telltale hot x-ray gas in an hourglass shaped region surrounding the dominant galaxy and shows the presence of a massive galaxy cluster in the distant universe . ... The cluster associated with 3C294 is 10 billion light-years away making it the most distant x-ray galaxy cluster ever detected . ... About APOD | ...

Еще в разделе: (Показать все результаты (>6335) - www.sai.msu.su/ )

• APOD: 2001 February 7 - Distant Open Cluster M103
• Types of Nebulae
• APOD: 2014 February 17 - The Cosmic Web of the Tarantula Nebula

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel and Contacts . Travel to ESO Headquarters . ... Green ESO . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... View shopping cart . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... VST . ... The glowing jumble of gas clouds visible in new image make up a huge stellar nursery nicknamed the Prawn Nebula. ... Milky Way : Nebula : Type : Star Formation . ...

Еще в разделе: (Показать все результаты (>66615) - www.eso.org/ )

• The star that exploded on February 23 in the Large Magellanic Cloud | ESO
• Zooming in on a stellar nursery in Corona Australis | ESO

... 21 February 2008 total lunar eclipse photographed by Bob English in Franklin, TN. ... Friday, 22 February 2008 11:16 . International Year of Astronomy, Ireland National Node . ...

Еще в разделе: (Показать все результаты (>2550) - star.arm.ac.uk/ )

• Armagh Observatory
• JLE Dreyer
• Terry Mosely's Bulletins

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

Еще в разделе: (Показать все результаты (>12932) - www.stsci.edu/ )

• HST this week: 053
• HST this week: 132
• HST this week: 039

Many intermediate-age star clusters in the Magellanic Clouds exhibit very unusual features in their colour-magnitude diagrams that suggest they may have formed their stars over periods spanning hundreds of millions of years per cluster. ... Nonetheless, this interpretation is enticing in the context of the formation of ancient globular clusters, which almost always exhibit puzzling abundance patterns that apparently require multiple episodes of star formation to explain. ...

Еще в разделе: (Показать все результаты (>633) - www.mso.anu.edu.au/ )

• Philip Lah's Talks
• Philip Lah's Research

... Tonight's Sky . ... The Magazine . ... Observing . ... Star Atlas . ... stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... February 2003 . ... If you trace a well-worn path between the same deep-sky objects every time you observe, see how your favorites compare with those chosen by Astronomy.com visitors. by John Shibley . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

Еще в разделе: (Показать все результаты (>6689) - www.astronomy.com/ )

• The Large Magellanic Cloud, open cluster NGC 1664, and reflection nebula NGC
• Very distant galaxy cluster confirmed | Astronomy.com
• A cosmic-ray source uncovered | Astronomy.com

... Our Galaxy . ... Space Flight . ... No Comments Dim and isolated, the dwarf irregular galaxy WolfтАУLundmarkтАУMelotte (WLM) could be described as an astronomical тАЬliving fossilтАЭ as it seems to have developed since it formed billions of years ago [ ] . Continue Reading.. ... Posted on November 24, 2011 | ... 3 Comments The astronomy community is excited by the discovery of an exploding star, a supernova, in a galaxy 21 million light years away in the constellation Ursa Major. ...

Еще в разделе: (Показать все результаты (>2824) - www.armaghplanet.com/ )

• Supernova spotted by Irish astronomer | Astronotes
• M55 globular cluster seen by ESO | Astronotes
• Wonders of the February Night Sky | Astronotes

... 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 > . ...

Еще в разделе: (Показать все результаты (>6701) - www.arcetri.astro.it/ )

• FEBRUARY 26th 1998 SOLAR ECLIPSE FROM VENEZUELA
• Deep X-ray and IR study of the distant X-ray cluster XDCP J0044.0-2033 (Il
• APOD: July 9, 1999 - NGC 7789: Galactic Star Cluster

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

Еще в разделе: (Показать все результаты (>328) - www.mao.kiev.ua/ )

• Celestial calendar - Eclipses of the Moon

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

Еще в разделе: (Показать все результаты (>42) - www.inasan.rssi.ru/ )

• Home page of Dmitri Wiebe

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

Еще в разделе: (Показать все результаты (>1677) - www.mrao.cam.ac.uk/ )

• PPEUC Programme - Cosmic Microwave Background Workshop
• Astrophysics Group AMI Publications
• Astrophysics Group Arcminute Microkelvin Imager

... Takuya Akahori "Faraday Rotation Measure due to the Intergalactic Magnetic Field" . Shae Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . Roger Clay "Using low energy cosmic rays to investigate local galactic magnetic fields" . Roland Crocker "A new lower limit on the magnetic field around the Galactic Centre" . ... JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ...

Еще в разделе: (Показать все результаты (>16215) - www.atnf.csiro.au/ )

• ATNF Daily Astronomy Picture
• ATNF SNR Publications: 1996 - 2000
• WALLABY - the ASKAP HI All-Sky Survey

... Special Reports Giant space cloud may be powered by black holes 17:57 23 April 2007 NewScientist.com news service David Shiga An enormous cloud of roiling plasma in space may be drawing its energy from black holes, new observations suggest. Such clouds might be sources for the mysterious particles that occasionally crash into Earth's atmosphere at ultra - high speed. ... But higher energy particles in the cloud may be able to escape, he says. ...

Еще в разделе: (Показать все результаты (>2943) - www.naic.edu/ )

• The Pleiades
• Pulsar Highlights - A Dozen new MSPs in Globular Clusters
• The Evolution of Galaxies Seen Through The Neutral Hydrogen Line The Evolution

This page is devoted to information on Supernova 1999gi in NGC 3184 . ... Information on the original web pages for many of these images can be found on the Supernova links web page. ... NGC 3184 is a fairly close Mag 10.3 galaxy, only about half as distant as the Virgo cluster. ... Seiichi Yoshida has a 1999gi page . Odd Trondal's 1999gi page . ... CfA image . ... 14.5 . ... Jean Marie Llapasset image . ... vsnet-alert 3805 ] SN 1999gi in NGC 3184 . vsnet-chat 2438 ] Host galaxy of SN1999gi . ...

Еще в разделе: (Показать все результаты (>969) - www.rochesterastronomy.org/ )

• Supernova 2002bu in NGC 4242
• Supernova images - Best of

This section describes the calculation by which Aristarchus used the duration of a total lunar eclipse to deduce the distance of the Moon. ... This lesson plan supplements: "How Distant is the Moon--1", section #8c: on disk Shipprc2.htm , on the web . ... The shadow of the Earth at the Moon's distance is narrower than the Earth, because the Sun is seen not as a point but as a disk 0.5 degrees wide. ... An eclipse of the Moon is the passage of the Moon through the shadow of the Earth. ...

Еще в разделе: (Показать все результаты (>975) - www.cosmos.ru/ )

• Cosmic Rays
• Space Research Institute (IKI) Seminar
• How Distant is the Moon?--lesson plan #15

... Take the air we breathe: its molecules have energies around 0.03 ev (electron volt--see energetic particles ) as fast as a cannonball, though still quite a bit slower than the typical satellite. ... The Sun's plasma is much hotter , and that of the magnetosphere is still hotter. ... They are known as cosmic rays or cosmic radiation . ... Actually, the source of cosmic rays is probably not quite as intense, because cosmic ray particles can stay around the galaxy much longer than starlight. ...

Еще в разделе: (Показать все результаты (>728) - www.iki.rssi.ru/ )

• The Moon's Distance--Another Way
• Cosmic rays [Oulu]
• High Energy Particles

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Еще в разделе: (Показать все результаты (>244) - zebu.uoregon.edu/ )

• Astronomy HyperText Book: Interstellar Medium
• QSO Absorption Lines and Other Cosmological Probes
• The Galaxy Gallery Page IX: Clusters of Galaxies

... On the morning of Thursday, 26 February, amid the Gal pagos Islands, the Sun will fade from view. Not the culmination of ancient prophecy, but none less mystical, Earth's small Moon will be executing a slow slide past the enormous Sun. ... And anyone living in southern North America, Central America, northern South America, or on islands and cruise ships in the Caribbean Sea will, weather permitting, have the opportunity to experience the wonder of a solar eclipse. ...

Еще в разделе: (Показать все результаты (>1129) - www.astrosociety.org/ )

• ASP: Beacons in the Gloom
• ASP: More About Deep Space Objects and Cosmic Terms
• ASP: Contents, January/February 2000

ECLIPSES, TRANSITS OF MERCURY AND VENUS . Year 1999 . Year 2000 . Year 2001 . Year 2002 . Year 2003 . Year 2004 . Year 2005 . ... Total solar eclipse . ... Transit of Mercury across the solar disk . ... Total lunar eclipse . ... Partial solar eclipse . ... Partial lunar eclipse . ... Annular solar eclipse . ... Penumbral lunar eclipse . ... big map . ... Transit of Venus across the solar disk . ... Annular-total solar eclipse . ... Non-central annular solar eclipse . ...

Еще в разделе: (Показать все результаты (>325) - www.ipa.nw.ru/ )