... 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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process. ...

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• ESO - The European ELT

... 6.09.1996 . ... Credit Copyright: The Clementine Project Explanation: What is the largest known impact crater in the Solar System? ... In general, the rocky terrestrial planets and moons are scarred and battered from frequent repeated bombardment by large objects during our Solar System's early years. ... Publications with keywords: impact crater . Publications with words: impact crater . ... 3D Barringer Meteorite Crater . ... Manicouagan Impact Crater on Earth . Barringer Crater on Earth . ...

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• Астронет > The Largest Impact Crater
• XWare > APOD
• Asteroid 253 Mathilde's Large Craters

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 6, 1996 . The Largest Impact Crater . Credit: The Clementine Project . Explanation: What is the largest known impact crater in the Solar System? ... In general, the rocky terrestrial planets and moons are scarred and battered from frequent repeated bombardment by large objects during our Solar System's early years. ...

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• APOD: 2015 August 27 - The Large Cloud of Magellan
• APOD: 2000 August 29 - The Regolith of Asteroid Eros
• APOD: 2009 August 11 - Inside Barringer Meteor Crater

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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• St Patrick's Parades across Ireland - the largest IYA social event on the
• Southern African Large Telescope (SALT) August 2004
• Southern African Large Telescope (SALT)

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

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... Day-by-day lines contain complete set and intended for those who have been there (I mean, in Kyoto :) . ... Large format is mainly for 1600x1200 screens and fast link (pictures are up to 150K in size). Normal is for typical 1024x768 screen (i.e. 15" monitors). ... Photos look incredible on it. ... Large . ... Normal . ... Thumbnails . ... Contents with thumbnails: Large | ... Nara, one of the historical cities of Japan . ... August 17, Sunday. ... Nara. ... return to photo album contents | ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... A recent image of Lindsay Crater assembled from Lunar Recconnaissance Orbiter imagery.On Earth any of those tiny craters in the main crater's floor would be major tourist attractions.( ... Time passed, intelligent life arose on Earth and gave the crater a name, Dollond-C.Then ?аin 1972 Apollo 16 landed about 100km to the craterтАЩs southeast?а but that is as close as life as ever come to it. ... Name * . ...

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• A Rolling Stone on the Moon | Astronotes
• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• Wan Hu: China's first spaceman? | Astronotes

Mathilde . ... On June 27, 1997 the Near-Earth Asteroid Rendezvous (NEAR) spacecraft flew flew past asteroid 253 Mathilde. ... On June 27, 1997 NEAR made a spectatular 25 minute flyby of Mathilde which resulted in more than 500 images of a dark, crater-battered little world that dates to the beginning of the solar system. ... This first image of asteroid 253 Mathilde, returned by the NEAR spacecraft just before 10:00 AM EDT on June 27, 1997, was taken from a distance of 1800 kilometers (1120 miles). ...

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• Chain of Impact Craters Suggested by Spaceborne Radar Images
• Educator's Guide to Impact Craters
• Jupiter Moon Callisto

A team of scientists believes they have discovered a chain of impact craters in the central African country of Chad that suggests ancient Earth may have been hit by a large, fragmented comet or asteroid similar to the Shoemaker-Levy 9 comet that slammed into Jupiter in 1994. The craters were discovered in radar images of the Earth taken by the Spaceborne Imaging Radar C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) that flew on the Space Shuttle Endeavour in April and October of 1994. ...

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• Phobos
• Jupiter Moon Callisto
• Mimas

... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

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Using the data obtained with the Spitzer Space Telescope as part of the Surveying the Agents of a Galaxy's Evolution (SAGE) legacy survey, we have studied the variations of the dust composition and abundance across the Large Magellanic Cloud (LMC). ... Using a model and comparing with a reference spectral energy distribution from our Galaxy, we deduce the relative abundance variations of small dust grains across the LMC. ... ADS Citation Query . ... citations vs. year [year,citations] . ...

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• Gauging the impact of executing science program across different COS/FUV
• All kinds of death - 9
• The Large Magellanic Cloud's Largest Molecular Cloud Complex: Spitzer Analysis

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Read Mark BosloughУ?т??т??s blog on the Jupiter impact . ... How often does a large meteroid hit the Moon? Can I see such an impact? ... We think 2-pound rocks likely hit the Moon more than 260 times per year. Get instant access to subscriber content on Astronomy.com! ... Pluto's largest moon may have once had an ocean . ...

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• How large a body would it take to make a crater as wide as the Gulf of Mexico?
• large (8 inches or larger) | Astronomy.com
• New rover snapshots capture Endeavour Crater vistas | Astronomy.com

... 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. ...

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... Carefully measure the diameter of the craters formed by the impact without disturbing the sand. ... Crater diameter increases with increasing mass. ... Without disturbing the sand, carefully measure the crater diameter. ... Did you measure any difference in the diameters of the craters? Yes, as velocity increases, so does crater diameter. ... Impact cratering. ... Impact craters can be demonstrated with younger or less advanced students using mud instead of sand and ball bearings. ...

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• ASP: Mercury Magazine
• ASP: An Ancient Universe - Changes in the Solar System
• ASP: Astronomy in the News

... Telescopes . ... The time requests are accepted in an electronic version with on-line form in Russian or English. ... Unregistered request will be disregarded by the Large Telescopes Programm Committee. In exclusive cases the secreatry of the Committee is entitled to accept an observational time request given permission of the Chairman of the Committee or the director of the SAO RAS. The Program Committee considers generally one time request submitted by the principal applicant. ...

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• Events archive

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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• Gemini NIFS August 2001 Update.
• Comparison of simulations with the large scale radio galaxy M87.
• Large Magellenic Cloud (7)

PHOENIX PARK HOTEL . ... Washington, DC 20001 . Contact: 1-800-824-5419 or 1-202-638-6900; Phoenix Park Hotel website . Group Code: 11009 (or National Astronomy & Ionosphere Center-NAIC) . ... Hotel George . ... 202 347-4200 . ... 202 737-1234 . ... 202 638-1616 . Washington Court Hotel . 525 New Jersey Ave N.W. Washington, DC 20001 . 202 628-2100 . ... 202-842-2500 . ...

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• Overview of Large Surveys and Data Access Issues: A Personal View
• The Large Magellanic Cloud
• Asteroid 1998 QE2 and Moon Safely Pass Earth

. ATLAS is a project to image seven square degrees of sky, in two fields (CDF-S and ELAIS-S1), at radio wavelengths, to an rms of about 15 Jy, making it the widest deep radio survey aver attempted. The fields are chosen to cover the Spitzer Wide-Area IR Extragalactic Survey (SWIRE), and the radio images cut through the dust, to trace the cosmic history of AGN and star-forming galaxies. This page last updated by Ray Norris 5-Mar-2007

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• ATNF Media Release - 20 August 1998
• ATNF Daily Astronomy Picture
• Large Magellanic Cloud

Estimating the NEO Population and Impact Risk: Past, Present and Future . ... Since most of the risk resides in the largest impactors, finding that fraction of the largest bodies, and that none of them has a significant chance of impacting in the next century or so, "retires" more than 90 % of the impact risk, including most of the risk of a globally catastrophic impact event. ... In the mid-size range, from ~150 m to ~1 km, the main risk is from tsunami generated by an ocean impact. ...

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• Keywords_196
• Keywords_327

... Transient large-scale chains of August 22, 1996 in four SOHO/EIT channels. At least two large scale chains go from the active zone 1 near the S-E limb where the 1N/C4.5 LDE event , long-duration two-component microwave GRF burst , and the large loop-like CME took place several hours before. ... Large-scale chains of August 22, 1996 in EUV, soft X-ray and microwave ranges. ... A modified SOHO/EIT movie at 195 A showing the evolution of the EUV large-scale chains during August 21-23, 1996. ...

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• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/980803.htm
• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/980824.htm
• http://www.izmiran.rssi.ru/~ichertok/CHAINS/ANNOUNC/remarks.htm