... Астронет | ... Clusters and Nebulae of the Hexagon . ... Credit Copyright: Axel Mellinger Explanation: At first, the bright stars of the large asterism known as the (northern) Winter Hexagon might be hard to pick out in this gorgeous deep sky mosaic from December 2002. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Публикации с ключевыми словами: nebula - cluster - туманность - звездное скопление . Публикации со словами: nebula - cluster - туманность - звездное скопление . ...

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• Астронет > Gliese 876 System Includes Large Terrestrial Planet
• Астронет > VB 10: A Large Planet Orbiting a Small Star
• Астронет > Ganymede: The Largest Moon in the Solar System

... 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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process.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
• Panning across the bright star cluster Messier 7 | ESO
• Zooming in on the bright star cluster Messier 7 | ESO

Астроплощадка: 53 20 56,505 N 83 46 07,735 E, H абс. = 209 м. + Информационные каналы . ... Анк а дня . ... Новый телескоп заглянет в гости к первым звездам . 13-10-2004 17:42 Мембрана . Уникальный "Большой миллиметровый телескоп" (Large Millimeter Telescope) ? ... Все ключевые слова . Картинка дня . ... Copyright 2002-2014 . ...

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• Ключевое слово ?Very Large Telescope?
• Ключевое слово ?Very Large Array?
• Ключевое слово ?галактика?

... 2006 September 18 . Eris: The Largest Known Dwarf Planet . ... Explanation: Is Pluto the largest dwarf planet? ... Currently, the largest known dwarf planet is (136199) Eris , renamed last week from 2003 UB313 . ... Dwarf planets Pluto and Eris are trans-Neptunian objects that orbit in the Kuiper belt of objects past Neptune. ... Since Pluto's recent demotion by the IAU from planet to dwarf planet status, Pluto has recently also been given a new numeric designation: (134340) Pluto. ...

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• APOD: 2000 September 29 - September Sky
• Solar System Extrema
• APOD: 2008 September 17 - MACSJ0025: Two Giant Galaxy Clusters Collide

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• A trio of open clusters in Cygnus, planetary nebula NGC 7139, and elliptical

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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... 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 .. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Monthly Sky Notes . ... March . ... Posted on May 9, 2012 | 9 Comments €аA globular cluster is made of hundreds of thousands or even millions of stars packed together in a pretty compact ball. ... Continue Reading.. ... 15 Comments Today Sirius, the brightest star in the night sky is an unmistakable blue-white in colour although it does twinkle a lot and can appear to change colour. ... Posted on March 29, 2012 | ... What are the stars? ...

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• See giant planet Jupiter tonight | Astronotes
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... Bad Astronomy . Misconceptions . ... Bitesize Astronomy . ... The Nine Planets . ... The webpages on this and other sites give lots of details, but I thought it might help if I made a brief synopsis of the arguments I and others make to debunk this pseudoscientific silliness. ... The Sun is not acting in any way abnormally. There are not more earthquakes than normal. ... This is exactly the same sort of bad logic used in the earthquake argument, and is just as wrong. ... 2008 Phil Plait. ...

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... 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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• Asteroid in Jupiter Resonance
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... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN

Jupiter is the largest of the nine planets, more than 10 times the diameter of Earth and more than 300 times its mass. ... The mean density of Earth is 5.245 times that of water. The pull of gravity on Jupiter at the top of the clouds at the equator is 2.4 times as great as gravity's pull at the surface of Earth at the equator. ... It is tipped about 11њ to Jupiter's axis of rotation, similar to Earth's, but it is also offset from the center of Jupiter by about 10,000 kilometers (6,200 miles). ...

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• APOD: 2000 January 12 - NGC 6791: An Old, Large Open Cluster
• APOD: 2000 September 25 - AR 9169: A Large Sunspot
• HAEBE Clusters Analysis (Abstract)

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Next: Display of the results Up: How Pieflag works Previous: Step 3: Postprocessing to . When developing the flagging algorithms, it was found that often a few affected data points were not found during times with strong interference. ... An additional benefit of this procedure is that a larger safety margin is flagged around extended periods of bad data. ...

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... 142,800 Mean density (kg/m^3) .. ... 5.203 Rotation period (length of day in Earth hours).. 9.8 Revolution period (length of year) (in Earth years). 11.86 Obliquity (tilt of axis) (degrees).. 3.08 Orbit inclination (degrees).. 1.3 Orbit eccentricity.. 0.048 Mean surface temperature (K)........................ 120 (cloud tops) Visual geometric albedo.. 0.44 Atmospheric components.............................. 90% hydrogen, 10% helium, .07% methane Rings.. ...

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• Astro-2 and the UIT Experiment
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... Hubble Legacy 5apr02 jen 4 Desire for larger telescopes · History shows largest telescope diameter doubles every 31 years ­ 2.5m ­ 5m ­ 10m 1917 1948 1993 ... Other groups in the US and in Europe are thinking and talking about giant telescopes (up to 100- m) on the ground · Advances in adaptive optics makes this particularly exciting Hubble Legacy 5apr02 jen 5 California Extremely Large Telescope · ... When was the Hubble sequence in place? ...

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• HST this week: 064
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... Незарегистрированные заявки Комитетом не рассматриваются. В исключительных случаях секретарь Комитета может принять заявку с разрешения председателя КТБТ или директора САО РАН. ... 1) исключительное авторское право пользования данными в течении 2-х лет после наблюдений принадлежит заявителям программы; . ... Приведите максимально подробное описание требуемого для выполнения программы оборудования, светоприемников, отношения С/Ш, спектрального или временного разрешения, системы регистрации и др. ...

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• articles_flera_en
• Events archive
• topic_en

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 . ...

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• ASP: A Good Definition of the Word "Planet": Mission Impossible?
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• ASP: Monster Comet Promises Big Show

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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• Frontiers of Astronomy with the World's Largest Radio Telescope Frontiers of
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... Doctor : re: К слову - спецы по теории информации . ... Doctor К слову - спецы по теории информации Сократ re: К слову - спецы по теории информации 16-Сен (12:11) Отец re: К слову - спецы по теории информации 16-Сен (12:44) Отец re: К слову - спецы по теории информации 16-Сен (12:39) Doctor Примеры и окончательный вопрос ? ... 16-Сен (22:29) . ... 18-Сен (10:57) Mauhuur re: К слову - спецы по теории информации 16-Сен (18:44) Mauhuur re: К слову - спецы по теории информации 16-Сен (18:43) . ...

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• К слову - спецы по теории информации : Старый форум Клуба Скептиков
• re: Ключевое слово - : Старый форум Клуба Скептиков
• re: Знаменитые последние слова : Старый форум Клуба Скептиков

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

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• A VLA Survey of Rich Clusters of Galaxies I.
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• A VLA Survey of Rich Clusters of Galaxies II