... Beautiful island universe M94 lies a mere 15 million light-years distant in the northern constellation of the hunting dogs, Canes Venatici. ... The region includes the open star cluster M38, emission nebula IC 410 with Tadpoles, Auriga's own Flaming Star Nebula IC 405, and this interesting pair IC 417 (lower left) and NGC 1931. ... But without a telescope, even this immense spiral galaxy - spanning over 200,000 light years - appears as a faint, nebulous cloud in the constellation Andromeda. ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2007 July 6 . Bright Galaxy NGC 2903 . ... Explanation: Spiral galaxy NGC 2903 is only some 20 million light-years distant in the constellation Leo . ... In fact , NGC 2903 exhibits an exceptional rate of star formation activity near its center, also bright in radio, infrared , ultraviolet, and x-ray bands . ... About APOD | ...

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• APOD: 2013 April 16 - Grand Spiral Galaxy M81 and Arp's Loop
• APOD: 2006 July 7 - Bright Galaxy M81
• APOD: 2015 October 17 - Bright Spiral Galaxy M81

. A Hubble Space Telescope image shows the Ultraluminous Infrared Galaxy Arp 220, about 250 million light-years away in the constellation Serpens. The image shows the dust-obscured starlight from hundreds of star clusters in a small region of the galaxy about 5,000 light-years across. At the center of the image are two bright knots, where researchers detected magnetic fields. NASA, ESA, and C. Wilson (McMaster University, Hamilton, Ontario, Canada)

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BFFA38A44-32FE-473C-AF1E-480D3F971C32%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B53B14A91-BE94-4CC2-BEEC-F0C68F1D6E26%7D
• Capturing a spiral in Leo | Astronomy.com

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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• The Galaxy Gallery Page 6: Comparative Morphology

... Centaurus A : 15,000,000 light years away, in the constellation Centaurus, the closest AG to Earth . ... Astronomers think that the reason for the unusual shape of this galaxy is because hundreds of millions of years ago two galaxies, one dusty spiral and one bright ellipictal, collided causing a massive black hole in the middle and bright emmision of light. ... Andromeda galaxy: 2.8 million light years away, closest spiral galaxy to earth, farthest object one can see without a telescope. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Starbursts are short-lived events, stars are forming so quickly that the reservoirs of interstellar gas from which stars are coalescing would be used up on a timescale much shorter than the age of the galaxy . ... Strong stellar winds from giant new stars in the starburst region combine with the blasts of supernovae to push a mighty flood of extremely hot gas, a ?superwind? from the galaxy thousands of light years into intergalactic space. ...

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• Supernova in the Cigar Galaxy | Astronotes
• Kepler 36b and c: Too Close for Comfort | Astronotes
• Orion, mighty hunter of the winter sky | Astronotes

... August 7, 1998 . M65 Without Moth . ... Explanation: Messier 65 ( M65 ) is a bright spiral galaxy of stars only 35 million light-years away in the constellation Leo . ... The faint blue smudges along the spiral arms of M65 are large clusters of bright, newly formed stars within the distant galaxy while the bright individual stars are foreground objects in our own Milky Way galaxy . ... About APOD > . ...

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• A collection of images
• ESA Hubble Information Centre
• Neptune - Voyager 2

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

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• Brightest Northern Hemisphere Galaxy - an Astronomy Net Education Forum Message
• Astronomy Terms - To Help You Study The Universe - an Astronomy Net Article
• Astronomy articles, forums, listings, and other resources about Astronomy.

... Home . ... Data . ... WFPC2 Home . ... Instrument . Instrument Home . ... An integrated Bright Object Tool (BOT) has replaced the old VTT-based RObust Bright Object Tool. ... The tool will check each exposure in a program for field (and prime) objects that are either health-and-safety concerns, or may impact the scientific value of the data. ... The new tool utilizes information in the proposal file, and also uses the APT and Aladin interfaces for its tabular and graphical display, respectively. ...

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• Surface Brightness of Background Light
• Surface Brightness
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.

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• The bright star clusters Messier 47 and Messier 46 in the constellation of
• The bright star Fomalhaut in the constellation of Piscis Austrinus
• The location of the bright star cluster NGC 3532 in the constellation of Carina

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

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• Supernovae 2012fr in NGC 1365
• Bright Supernova - Archives
• Supernovae 2010do in NGC 5374

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... meteors impacting the Earth's upper . ... The Armagh Observatory is opening its doors on Monday 13th December for an evening of meteor observing to capture the Geminid meteor shower. ... They may be seen at any time during the period 7-17 December, appearing to come from a point in the sky known as the radiant, located near the two bright stars called the "twins", Castor and Pollux, in the constellation of Gemini. ...

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• Armagh Observatory Geminid Meteors
• ASTRONOMICAL PHENOMENA FROM MARS

In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

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• ASP: Book Review
• ASP: The Nearest Stars: A Guided Tour
• ASP: Monster Comet Promises Big Show

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

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... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Bad TV
• Phil Plait's Bad Astronomy: Mad Science

Profile" is a proposed multi-spacecraft mission to the Earth's magnetosphere. ... Click here for that list, also listed as appendix to "Science Closure" of the "" Multiprobe Mission " below. The 1997 Fall Meeting of the AGU , held in San Francisco December 8-12, included a special session Science Closure and Enabling Technologies for Magnetospheric Constellation Missions At that session, a talk and a poster on "Profile" were presented by D.P. Stern: . ... Science Tasks for "Profile". ...

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• Finding the Pole Star
• "CONSTELLATION" MISSIONS AND FUTURE RESEARCH
• The Brightest Moon

[ CATS home ] [ Back to CATS list ] [ ftp ] . 2000ApJS..131..335Rutledge+ . Division of Physics, Mathematics and Astronomy MS 220-47, California Institute of Technology, Pasadena, CA 91107 rutledge@srl.caltech.edu, rb@astro.caltech.edu, prince@srl.caltech.edu

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• The ROSAT All-Sky Survey Bright Source Catalogue
• WISE All-Sky Release Catalog
• RATAN-600 NCP bright radio sources

The sky inhabitants - the constellations. ... The constellations of Zodiac. The constellations of Zodiac are very popular. ... They were counted from the point of vernal equinox. ... As a result all the Zodiac row of constellations as if displaced in the two positions the count traditionally begings from the constellation where the point of a vernal equinox is. ... That is why the Sun comes to each Zodiac sign two - five weeks before the time when it comes to the constellation of the same name. ...

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• scorpione
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... Astronomy news . ... NASA's Spitzer Images Out-of-This-World Galaxy . ... It is spiral-shaped like our Milky Way, with long, spindly arms of stars. The "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. In this color-coded infrared view from Spitzer, the area around the invisible black hole is blue and the ring of stars, white. ... The ring around the black hole is bursting with new star formation. ...

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