... 2015 April 6 . NGC 3293: A Bright Young Star Cluster . ... Open cluster NGC 3293 is located in the constellation Carina , lies at a distance of about 8000 light years , and has a particularly high abundance of these young bright stars. A study of NGC 3293 implies that the blue stars are only about 6 million years old, whereas the cluster's dimmer, redder stars appear to be about 20 million years old. If true, star formation in this open cluster took at least 15 million years. ...

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• APOD: August 23, 1996 - NGC 3293: A Bright Young Open Cluster
• APOD: 2007 April 15 - M3: Inconstant Star Cluster
• APOD: 2012 April 3 - M46 and M47: Star Clusters Young and Old

... Just one minute before midnight EDT, Friday, August 28, the Space Shuttle Discovery began a long arc into a cloudy sky. ... Shadows of Saturn at Equinox . ... Unusual shadows and dark rings appeared around Saturn near its equinox last month. At that time -- early August -- Saturn's ring plane pointed directly at the Sun. ... Many stars like our Sun were formed in open clusters. ... D. rad Bacteria: Candidate Astronauts . ... Known as an extremophile, bacteria such as D. NGC 7771 Galaxy Group . ...

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... 2000 August 4 . M15: Dense Globular Star Cluster . ... In fact, only 40,000 light-years away in the constellation Pegasus, M15 is one of the most densely packed globular star clusters in our Milky Way Galaxy. This stunning Hubble Space Telescope image of M15 shows thousands of individual stars across the central 10 or so light-years of the cluster, also cataloged as NGC 7078. ... Globular star clusters harbor from a hundred thousand up to a million stars and roam the Milky Way halo. ...

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• APOD: April 2, 1999 - Stars of NGC 206
• APOD: 2000 August 30 - The Brown Dwarfs of Orions Trapezium
• APOD: August 7, 1998 - M65 Without Moth

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Neptune glows at its brightest . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• Why do some stars appear to flash a variety of different colors when you look
• Why do sunspots appear in groups? | Astronomy.com
• Bright planets meet at dusk | Astronomy.com

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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• ALFALFA Dark Cloud

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

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• Blue Straggler Stars
• C/2006 P1 (McNaught)

... Updated 2008 December 22nd . ... Updated 2008 December 18th . ... Updated 2008 December 17th . ... Updated 2008 December 16th . ... Updated 2008 December 15th . ... Updated 2008 December 10th . ... Updated 2008 December 2nd . ... Some Videos on our Web Sites . ... Cool October . ... Updated 2008 October 31st . ... Updated 2008 October 15th . ... Updated 2008 October 10th . ... Updated 2008 October 9th . ... Updated 2008 October 8th . ... Updated 2008 October 7th . ... Updated 2008 October 2nd . ...

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• Bright fireball seen over Ireland | International Year of Astronomy in Ireland
• Armagh Observatory
• Latest News

Browse the articles below for new ideas for your classroom. Mercury September/October 2005: Astronomy Education and Public Outreach: Steps and Missteps Toward an Emerging Profession (pdf) . Focus on Education articles as they appeared in Mercury: . ... March/April 2000: . ... Education Newswire articles as they appeared in Mercury, by issue. ... January/February 2000 . November/December 1999 . ... March/April 1999 . ... November/December 1998 . ... November/December 1997 . ...

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• ASP: Contents, July/August 1999
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Let Venus Be My Guide

Supernova 1999cl in M88 . This page is devoted to information on Supernova 1999cl in M88 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. Information on the original web pages for many of these images can be found on the Supernova links web page. ... M1 Supernova Search has a 1999cl page . ... Pedro Re' Animated gif image . ... DAX Observatory . ... vsnet-obs 21040 ] (fwd) Observation of Supernova 1999cl in M88 . ...

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• THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE
• Supernova 1999gi in NGC 3184
• Supernova 1999by in NGC 2841

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... ESO Supernova . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Future Projects . ... This NASA/ESA Hubble Space Telescope image shows the positions of the past, present and predicted future appearances of the Refsdal supernova behind the galaxy cluster€а MACS J1149+2223 . ...

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• ESO - Newsletter August 2014
• New Distant Comet Headed for Bright Encounter | ESO
• New Distant Comet Headed for Bright Encounter | ESO Australia

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

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• stars | Astronotes - Part 4
• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• Wonders of the February Night Sky | Astronotes

... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... Launch of Dnepr LV carrying Sich-2 and BPA-2 (State Space Agency of Ukraine), Nigeriasat-2 and Nigeriasat-X (SSTL, Great Britain), RASAT (Space Research Technology Institute of Turkey (TUBITAK UZAY)), EDUSAT (La Sapienza University of Rome, Italy), and Aprizesat-5 and Aprizesat-6 (SpaceQuest, USA) payloads is scheduled for 17 August 2011, at 10:12:20 decreed Moscow time (7:12:20 UTC). ...

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• RS-20 (Dnepr) Cluster Launch Mission Preparation
• Launch Campaign of DubaiSat-2 Cluster Mission
• Launch Date of DubaiSat-2 cluster mission

Электронная библиотека астронома-любителя. ... архив RSN . ... Апрель 1998 . ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Galileo Update - April 9, 1998 Привет всем! ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Mars Global Surveyor Update - April 9, 1998 Привет всем! ... The feature known as the "Face on Mars" in the Cydonia region was imaged quite successfully on April 5th and its image was released in raw form and in an enhanced form on April 6th. ...

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• Электронная библиотека астронома-любителя. RU.SPACE.NEWS - архив за 13 апреля

... Our recent observations with the Hubble Space Telescope (August 29, 2014) led to revealing a highly isolated dwarf spheroidal galaxy KKs 3 situated at a distance of 2.12 0.07 Mpc from the Milky Way. The dSph galaxy locates on the southern sky (RA=02 h 24 m 44.4 s , Dec.= ... Over the last decade, about 30 dSph galaxies have been discovered inside the Local Group through systematic search in the vicinity of M31 and more that a dozen dSphs were discovered in the nearby group around M81. ...

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• Events archive
• Optical component of GRB080319B
• important_en

April 26, 2013 ============== Support for Apogee's preflash option is being added to help remove the latent bulk image artifact that is present in images on Kodak sensors when they have been exposed to a bright infrared source. The effectiveness of this hardware feature is being assessed. ... The support will appear in test variants after version 4.1 and should not be used for critical photometry until we have the camera performance in this mode fully analyzed. ...

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• Shared Skies Photo Gallery

. Microwave Chains . The majority of the modified Nobeyama radio heliograms corresponds to the restricted range of the brightness temperature of Tb~5000-20000 K. On the negative Nobeyama radio heliograms, the white (i.e. absorption) features are radio filaments. October 30-31, 1992 . May 10-15, 1993 . November 1-4, 1993 . August 20-September 02, 1998 . Back to the parent page . Last update: 2 April 1999 . 

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• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/remarks.htm
• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/desc.htm
• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/980407.htm

Last modified: 17 April 1999 . ... V codes are for AO1 experiments W codes are for AO2 experiments VS experiment codes are VSOP Survey Observations VT Test/Calibration Observations ------------------------------------------------------------------------ EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES W088b1 J1229+02 L* Socr 105 Th:Apr-15 00:00 - 09:00 14 VLBA RO GO EB JB W077a W066a1 J0841+70 L Socr 107 Sa:Apr-17 13:00 - 00:00 8 NT BR OV SC HN TR NL KA W066b1 J0841+70 C ...

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• The HIPASS Bright Galaxy Catalog
• Pulsar Group Main/Visitors
• ATNF Daily Astronomy Picture

A team of U.S. and German astrophysicists have made the first ever detection of X-rays coming from a comet. ... Following the initial detection, the team reported repeated X-ray emissions from the comet over the next 24 hours. ... One preliminary theory is that X-ray emission from the Sun was absorbed by a cloud of gaseous water molecules surrounding the nucleus of the comet, and then were re-emitted by the molecules in a process physicists call "fluorescence." ... Comets . ...

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• Jupiter's Moon Ganymede
• Discovery of the Sunspot Cycle
• Uranus' Moon Umbriel

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

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• astro-ph authors/title/abstract search for 'galaxy cluster' (skipped 200) all