The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

... December 13, 1995 . A Delta Rocket Launches . Credit: NASA , KSC . Explanation: A Delta rocket is seen being launched in 1988. In use since 1960, Delta rockets have been launched successfully over 200 times. Scientific satellites placed into orbit by a Delta rocket include IUE , COBE , LAGEOS-I , ROSAT , EUVE , GEOTAIL , and WIND . A Delta rocket is scheduled to launch the X-ray Timing Explorer Satellite (XTE) in the very near future. Commercial launches include INMARSAT . ...

... SETI: Monday 7 December Ballyclare . ... Blackrock Castle Observatory: Cosmic Christmas Launch & Flood Relief Benefit: First Fridays at the Castle, December 4th. Blackrock Castle Observatory is launching Cosmic Christmas in association with RSVP Red Sandstone Varied Productions at the popular First Fridays at the Castle event on Friday December 4 th at 6pm. ... Deise Astronomy Club ). ... Tuesday, 1 December 2009 17:47 . International Year of Astronomy, Ireland National Node . ...

Russian . ... text in Russian) . ... The Behaviour of the Bz Component of the Magnetic Field in Coronal Mass Ejections . ... Cooperation of IZMIRAN and Sternberg Astronomical Institute in the Study of the Sublimational Component of the Solar Coronal Radiation . ... Solar Wind and Magnetic Storms in the 24th Solar Activity Cycle . ... text in English) . ... The Solar Corona in the Light of TRACE Observations . ... Expeditions of Irkutsk Astronomers to Total Solar Eclipses in 1981--2012 . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . Human Exploration . ... December . ... Posted on December 3, 2015 | No Comments WhatтАЩs that we hear? ... Continue Reading.. Posted on December 5, 2014 | 4 Comments The December skies mark my favourite time of the year for stargazing. ... Posted on December 6, 2013 | ... Posted on December 14, 2010 | ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

Astronomy Picture of the Day . ... 20.04.1998 . ... Credit: Phil Weisgerber ( TRW ), AXAF Team , NASA Explanation: Can you name this satellite? ... But after whom should the Advanced X-ray Astrophysics Facility (AXAF) be named? If your submitted suggestion conforms with contest rules and is chosen, you will have named the most powerful X-ray satellite ever built, and may even win a prize. ... April . ... April 1998 . ... Publications with keywords: satellite . ... SIRTF: Name This Satellite . ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... ISS Russian Segment . ... Experiments and Researches from 2013 . ... Support of the Station functionality; . ... Onboard photographic and video recording of the ISS RS flight history and implementation of symbolic activities program. ... Support of the Space Station functionality; . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... WISE is achieving 5sigma point source sensitivities better than 0.08, 0.11, 1, and 6 mJy in unconfused regions on the ecliptic in bands centered at wavelengths of 3.4, 4.6, 12, and 22 mum. ... The WISE All-Sky Release Source Catalog is available in compressed (gzip or bzip2) ascii form. ... Users should be aware that the Catalog table is extremely large. ... For complete documentation of the WISE All-Sky Release Source Catalog and the All-Sky Data Release, please see the Explanatory Supplement . ...

Target: Venus . The Soviet VEGA Spacecraft Two remarkable "busloads" of automated spacecraft were launched toward Venus by the Soviet Union in December of 1984. Each one contains three separate modules: one lander and one balloon-carried atmosphere probe to be dropped off at Venus in June, 1985, and one major package of instruments which will continue on to encounter Halley's Comet in March, 1986. ... Venus and Earth: A Comparison . Earth . ... in Earth days) . ... 243 Earth days . ...

... In the central equatorial Pacific, the large area of warmer than normal sea surface temperatures (large area outlined in red with a white center) associated with growing El Nino conditions has recently migrated eastward toward the coast of South America. http://physicaplus.org.il/zope/home/en/1105389911/1113511992_en На этой странице есть презентации с конференции, где активно обсуждалась . ... Картинка со страницы со статьей Шавива. http://physicaplus.org.il/zope/home/en/1105389911/1113511992_en . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. December 17, 1996 . Mariner's Mercury . ... Explanation: Mercury, the closest planet to the Sun, remains the most mysterious of the Solar System's inner planets. ... The only spacecraft to explore Mercury close-up was Mariner 10 which executed 3 flybys of Mercury in 1974 and 1975, surveying approximately 45 percent of its surface. ...