... 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 | ...

... Landsat 7 Views Planet Earth . ... Spiral disks are loose conglomerations of billions of stars and diffuse gas all gravitationally orbiting a galaxy center. ... Where did all the stars go? ... Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. Polar Ring Galaxy NGC 4650A . ... A rare type of galaxy known as a Polar Ring, NGC 4650A is composed of an old central group of stars and a young ring of stars rotating farther out. ...

Amalthea . Jupiter V . Amalthea [am-al-THEE-uh] is one of Jupiter's smaller moons. ... These four images of Jupiter's moon, Amalthea, were taken by Galileo's solid state imaging system at various times between February and June 1997. ... Amalthea, whose longest dimension is approximately 247 kilometers (154 miles) across, is tidally locked so that the same side of the satellite always points towards Jupiter, similar to how the near side of our own Moon always points toward Earth. ...

... Impact craters and associated concentric rings are about the only features to be found on Callisto. ... It has a bright central region that is 600 kilometers in diameter, and its rings extend to 3000 kilometers in diameter. ... This image shows the heavily cratered surface of Callisto. ... Also visible is a fresh, sharp-rimmed crater some 90 km (56 miles) across named Igaluk (center left third of picture), and a bright zone in the south polar area (bottom of image) which could be an impact scar. ...

... News . ... Imaging Basics . ... Image Galleries . ... Year of Pluto . ... Pluto's complex terrain on display . ... NASA/JHUAPL/SwRI . The images that make up this mosaic were sent back from NASA s New Horizons spacecraft from September 5 to 7, 2015. ... In the center of this 300-mile-wide (470 kilometers) image of Pluto from NASA s New Horizons spacecraft is a large region of jumbled, broken terrain on the northwestern edge of the vast icy plain informally called Sputnik Planum, to the right. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Milky Way . Stars . ... By admin September 12, 2011 Posted in: September . ... In this area of the sky there are a few little constellations that are worth a mention, Between Altair and the bright star, Albireo, at the head of Cygnus, lies(or flies) Sagitta, the Arrow, the third smallest constellation in the sky, which was well known to the ancient Greeks. ... One of the most amazing naked eye sights in the night sky is the Milky Way. ...

... The foot-point of the bright feature becomes weak. Magnetic fragment behaviour Note A bipolar region with very weak positive and Start of the data set. ... At the east, a stronger bipolar region relate to many bipolar regions. presented and cancellation occurs. 01:34 The negative fragments in the "weak bipolar region" become bigger and stronger. 01:50 The foot-points of The positive fragments in the "weak bipolar the jet-like feature region" become stronger and bigger. ...

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO Acronyms . ... Survey Telescopes . ... Galaxy Clusters . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... This video pan sequence gives a close-up view of one of the brightest star clusters in the sky. This image from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESOтАЩs La Silla Observatory in Chile, shows Messier 7, also known as NGC 6475. ... 180.0€аMB . ...

We report on recent observations of molecular clouds in the tidal Magellanic Bridge; specifically, the Ы?kpc-long, tidally extended "tail" of the Small Magellanic Cloud. In particular, we identify an unusually high 12CO(3-2)/12CO(1-0) ratio of 2-3 to 1, toward one of the clouds, suggesting a warm and dense molecular material associated with imminent or current formation of stars. ...

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 | ...

... Here are some general thoughts about the role of Mark5 recording in pulsar experiments. Pulsar work with the Mark5 Backend: Advantages: Flexibility: Set frequency time resolution after observations, enabling multiple analyses of the data. ... We can use the Mark5 recorders to gauge stability of the other pulsar timing backends: at multiple telescopes, and multiple epochs). ... The properties of these features changes as the scattering medium changes on day-month time scales. ...

ChangeLog for omgrism =============================== Version 1.1.30 - 2005-07-14 (VNY) (+src/omgextraction_mod.f90) A bug in the Marquardt optimisation code is fixed. ... Version 1.1.24 - 2005-05-23 (CB1) +(src/omgextraction_mod.f90 Ammended routine to fix build problem. Version 1.1.23 - 2005-02-22 (VNY) +(src/omgextraction_mod.f90): the negative counts that could appear when subtracting the background from a faint spectrum are taken into account. ...

OBSERVATION of RADIO LOUD PULSARS with the Fermi-LAT -ray telescope Thierry Reposeur CENBG Bordeaux, France on behalf of the Fermi-LAT Collaboration and the Pulsar Timing Consortium Orange Pulsar Meeting 27-28 September 2010 Orange, NSW, Australia pre-Fermi era 7 pulsars known to radiate -rays (6 EGRET, 1 COMPTEL) Vela, the brightest Geminga, 1st radio quiet B1952, no cutoff A too small population for an extensive study Fermi-LAT sensitity about 25x EGRET's expect many more pulsars. ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... 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. ...

M82 has an angular size of 9 x 4 arcminutes and has very high surface brightness. ... The high surface brightness is due to the very high star formation rate currently operative in M82. The interaction of this star formation pattern and the peculiar distribution of dust in M82 gives rise to its peculiar appearance and its misnomer label as an "exploding galaxy". The high star formation fuels vigorous hydrodynamic winds in the galaxy which can eject material to distances beyond the galaxy. ...

... The spacecraft of Magion type have been selected as the subsatellites of the Interball project: Magion-4 (C2-X) for the Tail Probe and Magion-5 (C2-A) for the Auroral Probe. ... Magion-4 was produced in the Czech Republic in collaboratrion with Russia, Ukraine, Hungary, Austria and has onboard scientific instruments and sensors designed and built in Czech Republic, Russia, Poland, Hungary, Romania, Bulgaria and Slovak Republic. ... Plasma flow detector VDP-S (Czech Republic, Russia) . ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Accidental Astrophysics: The Devil's In the Magnitudes, Part II . ... The star second to the Sun in brilliance is Sirius. ... Recall the magnitude system, passed down to us through a hundred generations of sky watchers, as a means of quantifying stellar brightness ("Accidental Astrophysics," May/June, p. 9). ... Yes, it is a magnitude difference, but that difference is due to the distance between us and the star. ...

... Samara region . SSAU History . SSAU roadmap . ... On April 12, 2013 small spacecraft AIST developed by SSAU students and staff was launched to the Earth orbit from Baikonur Cosmodrome as additional payload to Bion-M spacecraft. On April 21, 2013 AIST successfully undocked from Bion-M spacecraft and moved to its own orbit. ... Currently SSAU develops the project of small spacecraft AIST-2 designed for Earth remote sensing purpose. ... e-mail: ssau@ssau.ru . http://www.ssau.ru . ...

In 2001, Westerbork observations of the disturbed galaxy named VV-29 (alias Arp-188, UGC-10214) showed that there is second smaller galaxy (named VV-29c) that appears behind the western side of the main body of the distorted galaxy. ... The galaxy was featured as the May 2, 2002 Astronomy Picture of the Day . ... When VV-29 had its 15 minutes of fame in May 2002, it appeared under the name "The Tadpole Galaxy," but based on the images above, we will always think of it as "The CHAINSAW"! ...