... 2006 September 5 . Bright Cliffs Across Saturn's Moon Dione . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: What causes the bright streaks on Dione? Recent images of this unusual moon by the robot Cassini spacecraft now orbiting Saturn are helping to crack the mystery. ... The bright ice-cliffs run across some of Dione 's many craters, indicating that the process that created them occurred later than the impacts that created those craters. ... About APOD | ...

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• APOD: 2004 May 5 - NGC 6302: Big, Bright, Bug Nebula
• APOD: 2007 April 29 - NGC 6302: Big, Bright, Bug Nebula
• APOD: 2014 July 5 - M106 Across the Spectrum

... November 12, 1996 . Comet Hale-Bopp Passes M14 . ... Explanation : Comet Hale-Bopp continues its slow trek across the night sky, and can now be seen superposed near the bright globular cluster M14 . Will Comet Hale-Bopp become as bright in early 1997 as Comet Hyakutake did in early 1996? It is still too early to tell. ... Because of the size of coma , some speculate that the nucleus of Hale-Bopp is unusually large. ... Tomorrow's picture: Seven Jets from Comet Hale-Bopp . ... About APOD . ...

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• APOD: September 5, 1998 - The Pulsar Powered Crab
• APOD: October 18, 1999 - NGC 3603: An Active Star Cluster
• APOD: April 2, 1999 - Stars of NGC 206

... ESA , NASA Explanation: The bright clusters and nebulae of planet Earth's night sky are often named for flowers or insects , and NGC 6302 is no exception. With an estimated surface temperature of about 250,000 degrees C, the central star of this particular planetary nebula is exceptionally hot though -- shinning brightly in ultraviolet light but hidden from direct view by a dense torus of dust. ... Publications with keywords: planetary nebula - emission nebula . ... Emission Nebula IC 1396 . ...

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• NGC 6302: Big, Bright, Bug Nebula
• Journal "Peremennye Zvezdy"
• Астронет > Why is QSO 1229+204 so Bright?

... 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" . ...

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... Armagh Planetarium . ... Universe . ... January . ... Posted on January 21, 2011 | No Comments Don Pollacco, a research astronomer at Queens University Belfast, came to Armagh Planetarium to give a fascinating talk on exoplanets in January 2011. ... No Comments Armagh Planetarium kicked off 2011 in style with some amazing astronomy-based events in association with the€а BBC. Sinead McNicholl has a personal report of our part in the exciting Stargazing [ ] . ... Newer Entries . ...

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• Orion, mighty hunter of the winter sky | Astronotes
• Did a Wandering Star Light Up Ancient Skies? | Astronotes
• Tycho Crater's spectacular central peak | Astronotes

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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• Energy From the Oceans

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Three sixth-form students from St Patrick's Grammar School, Armagh , used the Faulkes Telescope South in Australia in April to observe and measure HW Virginis , an unusual "binary" or double star system suspected to host one or two extrasolar planets orbiting the central stellar pair. ... Armagh Observatory and associated researchers hope to develop this work to look for further evidence of planet-hosting binary star...

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• Terry Mosely's Bulletins
• ASTRONOMICAL PHENOMENA FROM MARS
• Sakurai?s Object (V4334 Sagittarii)

... Now, think about a much bigger move: What do you think it would be like if the Earth moved to a different part of our Galaxy? Our Galaxy, the Milky Way, is shaped like a whirlpool: It has bands of stars that spiral around the centre, which astronomers call the Galaxy s arms . ... We live in the outer parts of the Milky Way, in one of its spiral arms. ... The small centre of the Milky Way is a much more crowded place, as this is where most of its stars are found. ...

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• http://www.eso.org/public/news/eso1227/kids/
• http://www.eso.org/public/news/eso1249/kids/
• http://www.eso.org/public/news/eso1337/kids/

... Gauging the impact of executing science program across different COS/FUV lifetime positions . ... Changing Programs & Resolving Problems . ... The first such move occurred on 23 July 2012, when the COS FUV spectrum was moved to the COS FUV Lifetime Position 2 (LP2). ... It now appears that the move to COS/FUV Lifetime Position 3 will not occur until early 2015, and so a substantial fraction of Cycle 22 observationsare likely to occur at the COS FUV lifetime position 2, prior to the change. ...

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• Observing Faint Targets Near Bright Objects
• Andy Fruchter's Homepage
• Practical Validation of Results

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

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• Central Park ? Solar Observing ? Amateur Astronomers Association of New York
• Solar Bridge Across New York Harbor ? Amateur Astronomers Association of New
• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York

The Andromeda Galaxy (M31) . Hot stars burn brightly in this image from NASA's Galaxy Evolution Explorer, showing the ultraviolet side of a familiar face. At approximately 2.5 million light-years away, the Andromeda Galaxy (M31) is our Milky Way's largest galactic neighbor. ... The bands of blue-white making up the galaxy's striking rings are neighborhoods that harbor hot, young, massive stars. ... When observed in visible light, Andromeda s rings look more like spiral arms. ...

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• Astronomers directly image massive star's "super-Jupiter" | Astronomy.com
• Hubble directly observes the disk around a black hole | Astronomy.com
• Celestial tapestry is born of uncertain parentage | Astronomy.com

Definitions of Magnitudes and Surface Brightness 1 The magnitude system 1.1 Apparent magnitude Astronomers are stuck with the antiquated old system of magnitudes and so a clear explanation of what this system is and how it relates to more sensible units is important. ... 1.2 Absolute magnitude Absolute magnitude is a logarithmic luminosity scale. ... One usually goes by the round about process of referring to the absolute magnitude of the sun. ... Magnitudes and surface brightness 6/6 ...

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• C/2006 P1 (McNaught)

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

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• ASP: Monster Comet Promises Big Show
• ASP: Beacons in the Gloom
• ASP: Steering by Different Stars? Astronomers and the Dark-Sky Movement

... Data . AAS 221 . AAS 219 . ... The first thing to note is that Twitter does not guarantee to return all matching Tweets, whatever method is used (unless you have direct access to their "fire hose", which I don't). ... This should result in the same results as my REST-based search (method 2), since the volume of Tweets was probably not enough to cause this site to miss Tweets based on their collection strategy . ... A search for the tag #aas219 (case insensitive) using the Twitter REST API . ...

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• A matrix of tweets from #AAS223
• A matrix of tweets from #AAS221
• A constellation of tweets from #AAS221

... 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. ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Misconceptions: Coast to Coast Am
• Phil Plait's Bad Astronomy: Bitesize Astronomy

... The Magnetic Sun . ... Galileo had guessed they were clouds floating in the Sun's atmosphere, obscuring some of its light. ... It turned out that the Sun has a polar field somewhat like the Earth's, but that it reverses its polarity during each 11-year cycle. ... Sunspot fields were evidently produced by electric currents, and it was well known that such currents could be generated by a " dynamo process ," by the motion of an electric conductor (e.g. the flow of solar plasma) through a magnetic...

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• (S-7a) The Black Hole at the Center of our Galaxy
• The Lodestone
• Seasons of the Year

... Low Polar Orbit . ... Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. ... Many spacecraft use such orbits, e.g. the US Air Force surveillance satellites of the DMSP series, or the series of French Earth-resources spacecraft SPOT . ... If the satellite then starts near a noon-midnight orbit, it will always pass near noon and near midnight. ...

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• Jupiter's Moon Amalthea
• The Motion of Magnetically Trapped Particles -- History
• The Sun's Corona

Images and text 2003 Paul Valleli . While up at Stellafane for pre-convention preparations, I spent some early morning times, experimenting with different videography setups on the 13" F/10 Schupmann at the McGregor Observatory. ... Mars was too bright and would have required neutral density filters. ... Next time, I will try 12mm and 9mm projections. ... I aquired about ten thousand frames by 3AM, at which time a breeze picked up and the seeing went to Hellas! ... 2003 Paul Valleli . ...

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• Venus 2004 transit photo collection

... Corvus Capital, along with its own capital, has the backing of a number of international funding partners. ... MyCloudtag App has launched in the Apple App Store Google Play store! App Fitness & Health . Andrew Regan lead a 10 man team on the first ever there-and-back crossing of the Antarctica. ... CloudTag is a London Listed Company focused on the Fitness and Wellbeing Market. AIM Fitness & Health . Sirius Petroleum is an Oil Gas Company listed on London's AIM. AIM Oil & Gas . ...

20. di_eks