... 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. ...

... Jupiter's Great Red Spot from Voyager 1 . ... Credit Copyright: NASA , JPL ; Digital processing: Bjфrn Jяnsson ( IAAA ) Explanation: It is a hurricane twice the size of the Earth. ... It is Jupiter's Great Red Spot , the largest swirling storm system in the Solar System. ... The above image is a recently completed digital enhancement of an image of Jupiter taken in 1979 by the Voyager 1 spacecraft as it zoomed by the Solar System's largest planet. ... Jupiter and Venus from Earth . ...

As noted earlier Kristian Birkeland, reporting in 1903 on his expeditions to the auroral zone, proposed that magnetic disturbances accompanying the aurora were caused by large electric currents flowing down the length of auroral formations. ... Some scientists disagreed with Birkeland and claimed the electrojets did not connect to space but instead their entire circuit lay inside the ionosphere, like that of other ionospheric currents known at the time, believed to be caused by atmospheric tides. ...

... Corporate Partners Rock Our Cosmos! Current Partners . ... In addition to Sky & Telescope and SkyandTelescope.com, the comany publishes Night Sky, a bimonthly magazine for beginning astronomers, an annual magazine called SkyWatch, an annual magazine called Beautiful Universe, as well as books, star atlases, posters, prints, globes, and other fine astronomy products. ... We thank our Corporate Affiliates for their annual investment in partnering with the ASP to improve astronomy education. ...

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

... Users . ... AAS 225 . ... This particular part of the analysis has been disabled since the code is struggling to cope with the number of users seen this year, in particular the large contingent of people who have re-tweeted NASA. ... The links between the accounts identify those users who have mentioned another user in a tweet, using the @name syntax; the line widths increase based on the number of mentions but given that the graph is ever-so-slightly crowded this isn't that useful at this time. ...

... Recent milestones in the Webb project include final delivery of all four science instruments to the Goddard Space Flight Center (GSFC). ... The instruments have become part of the Integrated Science Instrument Module (ISIM) and are undergoing a series of cryogenic vacuum testing there. ... Once the ISIM tests at Goddard are completed, the next testing step involving the instruments is to integrate the ISIM with the mirror components and test the Optical Telescope Element and Integrated Science (OTIS...

... The Vela pulsar was the first discovered in the southern hemisphere (Large et al., 1968) and in an exciting rush of papers was shown to be slowing down, having a polarization sweep across the pulse and to glitch (Radhakrishnan et al., ... Whilst the Vela X nebula had been imaged in great detail at 20 cm by Bock et al. (1998; 2002) and the VLA had imaged the region around the pulsar at 6 cm (Bietenholz et al., 1991) no arcsecond observations close to Vela had been undertaken at the ATCA. ... 2002). ...

... Tonight's Sky . ... Sky this Month . ... milky way . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Astronomy for Kids . ... Sky Events . Get to Know the Night Sky . ... Is there any way photons could contribute to the mysterious dark matter? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Files in red?history) . ... Auroral Currents . 25H. Birkeland Currents . ... As noted earlier Kristian Birkeland, reporting in 1903 on his expeditions to the auroral zone, proposed that magnetic disturbances accompanying the aurora were caused by large electric currents flowing down the length of auroral formations. ... In later years these currents became known as the auroral electrojets , and considerable debate ranged over their cause and the way their circuit might be completed. ...

... Observatory . ... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2002 > vo2002 . ... ESO Data . ... Virtual Observatory Tools . ... A virtual observatory (VO) is a collection of interoperating data archives and software tools which utilize the internet to form a scientific research environment in which astronomical research programs can be conducted. ... Firstly, there is an explosion in the size of astronomical data sets delivered by new large facilities. ...

... Research . ... A rare hybrid morphology radio galaxy . ... In this project we will be able to investigate the environmental effect on star formation and galaxy evolution in individual galaxies falling into the cluster through radio observations of active galactic nuclei (AGN). Current models of galaxy evolution regulate the star formation rates within the simulated galaxies by invoking radio-mode feedback from AGN. ... Julie.Banfield@anu.edu.au . ...

... Astrophysics Group . ... STFC announces бе119 million contribution to The Square Kilometre Array . ... SKA AAVS0 array . ... One of these is the Square Kilometre Array telescope . ... STFC has as well announced today a contribution of бе165 million to theб European Spallation Source and бе25 millionб to participate in the M3 Space Mission (PLATO).б  Speaking ahead of an event at Jodrell Bank Observatory Science Minister David Willetts announced the funding for the two projects. ...

... NICS will be the only infrared instrument for the first light of the TNG; as a consequence, we decided to incorporate a sufficient degree of operation flexibility by providing the instrument with six different observing modes, three aimed at imaging and three at spectroscopy: . ... It will be possible to use the narrow band filters as order sorters; this will allow to perform high resolution long-slit spectroscopy in the wavelength ranges covered by the available narrow band filters. ...

... These include: South Africa (the SAAO and the South African National Research Foundation, under the auspices of the South African Department of Arts, Culture, Science and Technology); Poland (the Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences); the USA (the Hobby-Eberly Telescope Founding Institutions [the University of Texas at Austin and Pennsylvania State University ], Rutgers University the State University of ...

... Up: Surveys & Large Scale Data Management . ... The CoCat (Co-processor Catalogue) project main goal is to parallelize the VizieR large catalogue treatments (data extraction, cross-matching) for reducing the response time. ... Figure 2: The CoCat cluster. As the Sun server is becoming overloaded we decided to move the set of large catalogues to a Linux cluster (the CoCat cluster). ... The CoCat cluster involves one master node and five slave nodes (Fig 2 ). ...

... Since the pioneering work of Markarian ([ 1967 ]) objective prism surveys were recognized as a powerful tool to search for galaxies of various types of activity. ... Of special interest are blue compact galaxies (BCGs). ... A third sample of BCGs of Popescu et al. ([ 1997 ], [ 1998 ]) contains about 200 BCGs distributed in four regions of the northern sky and is based on a sample selected on the Hamburg Quasar Survey (HQS; Hagen et al. [ 1995 ]) digitised IIIa-J plates. ... 1997, 1998). ...

. Other Relevant Links . Number counts have been illustrated earlier in the talk. QSO Clustering and Large-Scale Structure , Scott Croom et al . QSO Evolution and the Luminosity Function , B.J. Boyle et al . | Front page | . | << - Contamination | QSO close pairs - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Solar System . ... Moon . ... Space Flight . ... Earth Satellites . ... Concept Spacecraft . ... Monthly Sky Notes . ... This image of Earth (left) and the Moon (right) was taken by the Juno space probe's JunoCam, three weeks after its 5 August launch. (image credit:: NASA / JPL / MSSS) . ... Earth and the Moon form a тАЬdouble planetтАЭ unique in the Solar System. ... Subscribe to Astronotes . ...

... of the Sternberg Astronomical Institute, . ... 115-th seminar) . ... 45 min . ... E.Gorbovskoj (SAI) . ... The secretary of the seminar - M.E.Prokhorov . ... Beskin V.S. (LPI) . co-chairman . ... The secretary of the seminar . ... In recent years, a strong need has appeared in exchanging ideas and information between diverse astronomical centers, such as Sternberg Astronomical Institute (SAI MSU), Lebedev Physical Institute (LPI theoretical dept.) ... Sternberg Astronomical Institute, . ...