... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

Umbriel ("UM bree el") is the thirteenth of Uranus 's known satellites and the third largest: orbit : 265,980 km from Uranus diameter : 1170 km mass : 1.27e21 kg Umbriel is a character in Alexander Pope 's The Rape of the Lock . ... All of Uranus' large moons are a mixture of about 40-50% water ice with the rest rock, a somewhat larger fraction of rock than Saturn 's large moons such as Rhea . ... It has far more and larger craters than do Ariel and Titania . ... Uranus .. Ariel .. ... Titania .. ...

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. ...

We present a mid-infrared analysis of star-formation activity in the Large Magellanic Cloud's molecular ridge (south of 30 Doradus). The Magellanic Clouds are a rare laboratory in which extragalactic star-formation diagnostics can be tested at high spatial resolution. ... Detailed analysis in very nearby galaxies, like the Magellanic Clouds, allows us to test and better understand the scaling relations used in unresolved and distant star-formation regions. ...

... Credit Copyright: AURA / NOAO / NSF Explanation: The brightest galaxy visible from our own Milky Way Galaxy is the Large Magellanic Cloud (LMC). Visible predominantly from Earth's Southern Hemisphere , the LMC is the second closest galaxy , neighbor to the Small Magellanic Cloud , and one of eleven known dwarf galaxies that orbit our Milky Way Galaxy. ... Publications with keywords: Local Group of Galaxies - LMC . Publications with words: Local Group of Galaxies - LMC . ...

... The Large Magellanic Cloud is a Dwarf Irregular galaxy in orbit around our own Milky Way. It is a large object, several degrees in size, and easily visible to the unaided eye in Southern Hemisphere skies. The LMC is located in the constellation of Doradus at about 5h30m Right Ascension, -68 degrees Declination, and lies at a distance of roughly 50 kiloparsecs (160,000 light years) from Earth. ...

... A team of Japanese scientists including Armagh astronomer Dr David Asher have announced the discovery of the second largest known Earth-crossing asteroid. The group is based at the new Japanese Spaceguard Centre at Bisei, west of Osaka. ... The subsequent tracking and orbit determination was assisted by Armagh asteroid expert David Asher, who is currently visiting Japan to help in the setting up of the new Spaceguard Centre funded by the Japanese government. ...

... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Australia Telescope 20GHz Survey . ... Bright prospects: Comparing the H Survey with large-scale radio continuum emission . ... Prospects for comparisons between the AAO/UKST H \ survey and large-scale radio continuum emission are considered, with particular reference to the recently completed Parkes 2.4-GHz survey of the southern Galactic Plane. ...

Oberon . Uranus IV . Oberon [O-buh-ron] is a moon of Uranus that is characterized by an old, heavily cratered, and icy surface. The surface shows little evidence of internal activity other than some unknown dark material that apparently covers the floors of many craters. The above image shows several large impact craters towards the center of the image. ... This image of Oberon shows several large impact craters towards the center of the picture. ... Polar Stereographic Map of Oberon . ...

... Earth is the tiny spot between Jupiter and the Sun). ... Distance Radius Mass Name Orbits (000 km) (km) (kg) --------- ------- -------- ------- ------- Sun 697000 1.99e30 Jupiter Sun 778000 71492 1.90e27 Saturn Sun 1429000 60268 5.69e26 Uranus Sun 2870990 25559 8.69e25 * Neptune Sun 4504300 24764 1.02e26 * Earth Sun 149600 6378 5.98e24 Venus Sun 108200 6052 4.87e24 Mars Sun 227940 3398 6.42e23 Ganymede Jupiter 1070 2631 1.48e23 + Titan ... Extrema .. ...

"Dynamical friction and formation of structures: some cosmological aspects", Astroph. Space Sci., v.123, p.393-402, 1986 (with S.G.Simakov). "Accretion Mechanism of the Formation of Large Scale Structure of the Universe", Astron.Zh., vol.66, p225-231, 1989 (with S.G.Simakov). Back .

... Astrophysics Group . Research . Atacama Large Millimetre Array (ALMA) . ... Cosmic Microwave Background (CMB) . ... Galaxy Formation and Evolution . ... The Astrophysics Group is actively involved in the ALMA project , a submillimetre interferometer being built in northern Chile. ... If you are interested in doing research in this area, please visit our Graduate Research Opportunities web pages. ... 2013, Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE . ...

Ganymede is the largest moon in our solar system, larger even than the planets Pluto and Mercury. ... Ganymede's surface consists of two main types of terrain: old, dark polygonal units, and young, bright valleys and ridges (see figure 11 ). ... In a similar way, hitting a large block of ice with a hammer makes white marks. ... Ganymede as seen by Voyager 2. ... Because Voyager couldn't spot any large impact craters, scientists have concluded that the moon's surface is young. ... Moon . ... Europa . ...

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 | ...

... Quasar catalog and survey parameters. ... ) Grade Seeing Direct / Prism min -------------------------------------------------------------- F823 00 00 +00 00 J7940 GG395 60 27 Jul 1982 A2 2.5 UJ6543P NONE 45 07 Nov 1980 AE3 2.0 F824 00 20 +00 00 J8202 GG395 60 05 Nov 1982 AI3 2.5 UJ11474P NONE 60 01 Nov 1986 BI4 2.5 SGP 00 53 -28 00 J9766 GG395 70 23 Nov 1984 A 2.5 UJ3682P NONE 70 17 Oct 1977 A 2.0 F826 01 00 +00 00 J7915 ...

... Tonight's Sky . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . ... Tour the Deep Sky . ... Observing springtime deep-sky objects with a large telescope . ... How large a body would it take to make a crater as wide as the Gulf of Mexico? ... The Gulf of Mexico is the result of plate tectonics, or "continental drift," in which the plates comprising the Earth's crust change position over time. ... Get instant access to subscriber content on Astronomy.com...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Ils photographient le ciel au Very Large Telescope . ... Astronomes ou ing†йnieurs, ils profitent de travailler sous le meilleur ciel du monde pour s'adonner †а leur passion de la photographie. ...

... Samara region . SSAU History . ... An alignment meeting on data mining, storage and processing of very large data amounts on the basis of hardware and software complex Big Data took place in Samara State Aerospace University. ... The laboratory for processing of very large data amounts on the basis of the hardware and software complex was made in the University and the necessary equipment was purchased. ... Data processing requires powerful processors and advanced computer programs. ... Big Data. ...

... About meteorites . ... Meteoritic data . Impact Crater Smerdyachee . ... Based on Smerdyachee's depth, near circularity, and its mounded wall, and analysis by N.A. Fillin of nearby Roshal, Russia, the Estonian scientists Yu.V. Krestlane and K.H. Mella proposed in 1987 that Smerdyachee Lake is a meteorite crater. ... In 2002, the Laboratory of Meteoritics of the Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences explored this mysterious lake. ...

... From the chain visibility point of view, it is very recommended to look at the Javascript movies , especially if the frame rate can be not regulated in your MPEG player. ... The non-CH-associated large-scale chains visible on the SOHO/EIT images at three wavelengths of 171, 195 and 284 as well as on the MLSO/HAO He I 10830 spectroheliogram of December 16, 1997. ... The SOHO/EIT movies at 171 and 195 show the chain dynamics on June 1-3, 1998. ... Javascript movie (230 KB), SOHO/EIT, 171 . ...