Z is for Mars . ... Credit Copyright: Tunc Tezel Explanation: This composite of images spaced about a week apart - from late July 2005 (bottom right) through February 2006 (top left) - traces the retrograde motion of ruddy-colored Mars through planet Earth's night sky . ... Retrograde motion can be seen each time Earth overtakes and laps planets orbiting farther from the Sun, the Earth moving more rapidly through its own relatively close-in orbit. ... NASA Official: Jay Norris. ...

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• Alpha Centauri: The Closest Star System
• Астронет > Alpha Centauri: The Closest Star System

... 2003 March 23 . Alpha Centauri: The Closest Star System . ... Explanation: The closest star system to the Sun is the Alpha Centauri system . ... The bright stars Alpha Centauri A and B form a close binary as they are separated by only 23 times the Earth- Sun distance - slightly greater than the distance between Uranus and the Sun . ... By an exciting coincidence, Alpha Centauri A is the same type of star as our Sun , causing many to speculate that it might contain planets that harbor life. ...

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• APOD: 2011 July 3 - Alpha Centauri: The Closest Star System
• APOD: May 26, 1996 - Alpha Centauri: The Closest Star System
• APOD: 2011 May 19 - NGC 253: Close Up

The sky background can contribute significant Poisson noise in broad and medium band filters, and must be taken into account during noise calculations. The actual sky brightness depends on the heliocentric ecliptic coordinates (latitude and longitude) in a manner summarized in Table 6.3 . ... 22.4 . ... An average sky brightness of V=22.9 mag arcsec -2 is assumed. ... Values for other filters or sky brightnesses can be computed from Table 6.2 , Table 6.1 , Table 6.3 , and Equation 6.2. ...

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• GRB 990123Page
• Results
• COS Instrument Handbook

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 11 June 2015: Armagh Observatory reports that the next two weeks will provide an interesting opportunity to observe the brightest planet, Venus, and the largest planet, Jupiter, as they move towards one another in the evening twilight. ... The image shows the sky view towards the West at around 11pm on 20 June 2015. ... Professor Mark E. Bailey, Armagh Observatory, College Hill, Armagh BT61 9DG. ...

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• First Observation of a Close Earth-Approaching Near-Earth Asteroid Using the
• The boot process in closer look
• Terry Mosely's Bulletins

... STScI-PRC96-25 HUBBLE'S 100,000TH EXPOSURE CAPTURES IMAGE OF DISTANT QUASAR The Hubble Space Telescope achieved its 100,000th exposure June 22 with a snapshot of a quasar that is about 9 billion light-years from Earth. ... The fainter object just above it is an elliptical galaxy. ... The quasar and star are separated by billions of light-years. ... Image files in GIF and JPEG format and captions may be accessed on Internet via anonymous ftp from ftp.stsci.edu in /pubinfo. ...

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• http://www.arcetri.astro.it/irlab/luna/news/near/near2.html
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sistemasolare/Marte/prc9927.txt
• A collection of images

... Close SSC-SPR-3253 Version 4.0.2 - 2004-02-26 GL ------------------------------- Updated task description. ... Version 1.8.2 2000-07-02 ------------------------- + test output removed Version 1.8.1 2000-07-02 ------------------------- Closed SPRs : + SSC- SPR -1147 PSF center harcoded at 320,320 + SSC- SPR -1604 Task fails if optional parameters are omitted + SSC- SPR -1791 missing info file Version 1.8 (January, 25 2000) -------------------------------- - ...

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• http://xmm.vilspa.esa.es/sas/5.4.1/doc/esplinemap/ChangeLog
• http://xmm.vilspa.esa.es/sas/6.1.0/doc/esplinemap/ChangeLog
• Source lies near to a bright source - bit 6

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... There has been an email circulating the 'net recently claiming that the full moon of December 22, 1999 is the brightest in 133 years. ... The brightness changes due to the varying distance of the Moon to the Earth (when it's closest, the Moon appears brightest) and the varying distance of the Earth/Moon system to the Sun (when closest to the Sun, again the Moon appears brightest). ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Bad News:

. Album : Фотоальбом Сергея Аюкова :: Travels to distant places and countries :: 1996/05 Greece, Chalkidiki :: Boat trip to Mount Athos. Peninsula governed by monks. Up . << Prev . We're getting closer; Mt. Athos is at the background. It is about 2000 meters high. Wind is cold (that's why I look so sick :-). Next >> . Photo album generated by album tool from David Madison's Marginal Hacks on Wed Jun 5 20:38:30 2013 .

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... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

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• Close-up of the Aurora
• The Scale of the Solar System
• The Exploration of the Earth's Magnetosphere"

... 1999 9° 10' Burns et al. xx image courtesy Norbert Junkes (MPIfR) Why Centaurus A is special s s s s s s s the first extragalactic radio source the brightest source in the Southern Hemisphere the second double lobed source discovered ­ after Cygnus A the closest Radio Galaxy the closest AGN the closest SMBH ­ VLBI resolution 0.01pc, 100 Rs A spectacular galaxy Evolution of the Models s ... Centaurus A composite Radio ­ Optical alignment Radio Radio ­ Optical alignment Precession?...

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• HIPASS Bright Galaxy Catalog
• The HIPASS Bright Galaxy Survey
• Programme - Abstract

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to SNR J0505.8-6801 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

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• Chandra Images for 0506-68.0
• Chandra Images for J0454.4-6713
• Chandra Images for SNR J0519.5-6902

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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• Galaxy Gallery Page III
• Galaxy Gallery Page II

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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• Close up view of the bright star cluster Messier 47 | ESO
• A close look at the young stars in the open star cluster NGC 2547 | ESO
• The Dreadful Beauty of Medusa | ESO

... Planets . ... Earth Satellites . ... Looking in the direction of the constellation Cygnus the Swan and launched by NASA in 2009 is the Kepler Space Observatory.Many previous missions searching for exoplanets mainly detected large giant planets, like large hot Jupiters (it is easier to detect larger planets).However KeplerтАЩs main objective is to search for much smaller planets located in a habitable zone which is not too close nor too far from their star; planets which may be just like our Earth. ...

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• Orion, mighty hunter of the winter sky | Astronotes
• Altair, Deneb and Vega: three easy to spot stars | Astronotes
• NGC4666: Secrets of a Starburst Galaxy | Astronotes

Photograph quality The photographs must be: I no more than 6-months old 35­40mm in width close up of your head and top of your shoulders so that your face takes up 70­80% of the photograph in sharp focus and clear of high quality with no ink marks or creases too close too far away I I I I blurred ink marked/creased I The photographs must: show you looking directly at the camera ...

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• Comet Observation Home Page (Chernogolovka)
• BRIZ: a vizualization program for Brillouin zone ? Fermi sphere

... The most spectacular view however is from space, where large areas of aurora can be observed simultaneously, even the entire polar cap. ... Such pictures often show a continuous ring of aurora around the polar cap (picture above), caused mostly by electrons leaking out along magnetic field lines, from the plasma sheet of the Earth's magnetic tail. ... Field lines from the auroral oval are believed to lead to the plasma sheet. ... A near-Earth circular polar orbit has many uses. ...

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• The Acceleration of the Aurora
• The Sun
• Comet Introduction

... First of all, you can obtain a map of the final coordinates of your objects and guide stars by using the command: PLOT/OPTOPUS [table] [label] [EW_flag] , . where [table] is the table output by REFRACTION/OPTOPUS . ... In order to avoid object misidentifications at a later stage, and for a cross identification between object identifiers and hole numbers, it is recommended to bring a printout of the table output created by the command REFRACTION/OPTOPUS to the telescope. ...

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• Preparing Data Frames
• The SNR X-rays Catalog
• HyperLEDA documentation: parameter: brief

... Class . ... PREV CLASS NEXT CLASS . FRAMES NO FRAMES All Classes . ... FIELD | ... METHOD . DETAIL: FIELD | ... public interface IJEventListener . ... Field Summary . static int . ... Field Detail static final int FOREGROUND_COLOR_CHANGED . ... Constant Field Values . static final int BACKGROUND_COLOR_CHANGED . ... static final int COLOR_PICKER_CLOSED . ... static final int LOG_WINDOW_CLOSED . ... static final int TOOL_CHANGED . ... Method Detail void eventOccurred (int eventID) . ...

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• ContrastAdjuster (ImageJ API)
• ij (ImageJ API)

... Its perihelion would occur on April 1, 1997, at which point the comet would be only 0.92 astronomical units from the Sun, just within the orbit of Earth. ... Taken in April 1993, the photo showed the comet over 13 astronomical units from the Sun, well beyond the orbit of Saturn. ... Hale, as in Comet Hale-Bopp, has written a book, Everybody's Comet (available through the ASP Catalog) and coordinated an Internet project, "Hale-Bopp: Live in the American Classroom." ... Anatomy of a comet. ...

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• ASP: Beacons in the Gloom
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Star Science in the Autumn Sky

Example of monstrous galaxies: On the left is the image taken at sub-millimeter wavelengths with ASTE. It looks like there is one bright monstrous galaxy. In the center is an image taken at the same sub-millimeter wavelengths, but this time using the new radio telescope facility ALMA. With 60 times better resolution and 10 times better sensitivity, we can see that actually there are 3 monstrous galaxies close together. ... ALMA (ESO/NAOJ/NRAO), NAOJ, H. Umehata (The University of Tokyo) ...

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• Close encounters: Comet Siding Spring seen next to Mars | Astronomy.com
• Closest, brightest supernova in decades is also a little weird | Astronomy.com
• A pair of close encounters | Astronomy.com