The broad background peak of activity of this year's Leonid meteor shower is expected to occur around dawn on the 17th November. ... It is anticipated that rates will be up to about 50 meteors per hour for a few hours around peak activity, under ideal conditions. ... According to Armagh Observatory astronomer, David Asher, and co-workers, there will be two additional peaks of activity after the broad stream peak. ... Leonid Meteor Pages . The unexpected 2004 Leonid meteor shower - PDF Format . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 12 . The Unexpected Tails of Asteroid P5 . Image Credit: NASA , ESA , and D. Jewitt ( UCLA ) et al. Explanation: What is happening to asteroid P/2013 P5? ... Were the main belt asteroid struck by a large meteor, it would be expected to sport a single dust tail. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Meteors and Meteorites . ... Monthly Sky Notes . ... November . ... Observers can expect around 10 meteors an hour on the night of the peak, although every 33 years the Leonids experience a phase of increased activity as their parent comet passes the Earth once again. ... Around€а 14 November, the€а faint and difficult to see Andromedids will be gracing the nightтАЩs sky although this may be in the range of about 3 meteors an hour. ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON NOVEMBER 2012 HAS MADE Wnov.= ... Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 26.11 - 02.12.2012, Forecast on 03 - 10.12.2012, Carrington Rotations 2130, 2131 (04,86.11, 02,17.12.2012) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS REMAINED ON THE AVERAGE LEVEL. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE AVERAGE AND THE LAST TWO DAYS-ON LOW LEVELS. ... NEXT WEEK THE GEOMAGNETIC CONDITION IS EXPECTED UNSETTLED AND QUIET. ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... November : 2015 . ... Magnetic storm of level G1 (minor) are expected . From 2 November 2015 to 28 November 2015 the following magnetic storms and disturbances are expected: . ... November 03, 2015 geomagnetic storm of level G2 (moderate) . ... November 09, 2015 geomagnetic storm of level G1 (minor) . ... November 02, 2015 geomagnetic storm of level G3 (strong) 2 November 2015 - 28 November 2015 . 01.11.2015 . ...

Astronomy Picture of the Day . Neptune's Great Dark Spot: Gone But Not Forgotten . ... Since Neptune receives only 3 percent the sunlight Jupiter does, they expected to find a dormant, dark, frigid planet. ... Meteor Storm Sights and Sounds . ... Indeed similar sights are astonishingly familiar world-wide to witnesses of this November's fireball-rich Leonid meteor storm. ... Extra Solar Planetary Atmosphere Detected . ... Ancient Layered Rocks on Mars . ... Is this a picture of Mars or Earth? ...

... GOODS unites extremely deep observations from NASA's Great Observatories, Spitzer , Hubble , and Chandra , ESA's Herschel and XMM-Newton , and from the most powerful ground-based facilities, to survey the distant universe to the faintest flux limits across the electromagnetic spectrum. ... The space-based observations are complemented by ground-based imaging and spectroscopy, including extensive commitments of ESO and NOAO observing time. ... 2010-04-10: Deep VLA 1.4 GHz data for GOODS-North . ...

Тема : Хвостатые гостьи V (информация для наблюдения комет) .. Показать сообщение отдельно . ... Хвостатые гостьи .. ... после того, как ISON приплыл мимо нас, земля находится на орбитальной траектории, которая пройдет через след частицы кометы (тот, который ISON оставил позади, когда это приближалось к солнцу и это случайно встретит или вокруг 12 января - 15, 2014 . ... лучшее время наблюдения 22:00 LDT (Northern hemisphere 45њ North) .. - радиант расположен вблизи Al'dzhabkhakh (30-Eta Leonis, ? ...

... 4a. Electric Fluid . ... Field Lines . ... EM Waves . ... One could then define the unit of current, as the current which, when flowing in a straight wire, attracts a similar current in a parallel wire 1 meter away with a force of unit strength, for every meter of the wires' length. ... Faraday also showed that a magnetic field which varied in time--like the one produced by an alternating current (AC)--could drive electric currents, if (say) copper wires were placed in it in the appropriate way. ...

Perhaps the greatest theoretical achievement of physics in the 19th century was the discovery of electromagnetic waves. ... It is possible to use this to define a unit of electric charge, as the charge which repels a similar charge at a distance of, say, 1 meter, with a force of unit strength (actual formulas make this precise). ... But "field" originally only meant the force a magnet or an electric charge could expect at a point in space, if it were placed there. ...

Hubble Observations Shed New Light on Jupiter Collision . Was it a comet or an asteroid? ... Their initial findings, combined with results from other space-borne and ground-based telescopes, shed new light on Jupiter's atmospheric winds, its immense magnetic field, the mysterious dark debris from the impacts, and the composition of the doomed comet itself. ... Hubble's ultraviolet observations show the motion of very fine impact debris particles now suspended high in Jupiter's atmosphere. ...