... Auroral Currents . ... Polar Caps . ... Aurora from Space . ... Magnetic Storms . ... Plasma phenomena occuring at one place in the magnetosphere also affect other locations This linkage is most pronounced between points that share the same field line, since field lines guide the motion of ions and electrons. ... Early researchers, who believed auroral electrons came from the Sun (see history ) could not understand why the aurora was absent from the vicinity of the magnetic pole itself. ...

... Auroral Currents . ... Polar Caps . ... Aurora from Space . ... Magnetic Storms . ... Plasma phenomena occuring at one place in the magnetosphere also affect other locations This linkage is most pronounced between points that share the same field line, since field lines guide the motion of ions and electrons. ... Early researchers, who believed auroral electrons came from the Sun (see history ) could not understand why the aurora was absent from the vicinity of the magnetic pole itself. ...

... Two Comets in Southern Skies . ... Credit: Gordon Garradd Explanation: Wielding a very wide-angle lens, astronomer Gordon Garradd was able to capture two naked-eye comets in one picture looking toward the west from Loomberah, New South Wales, Australia. At the far left lies comet C/2002 T7 (LINEAR) and at the far right, comet C/2001 Q4 (NEAT) . ... While comet T7 (LINEAR) is the brighter of the two comets, both are now fading. ... Publications with keywords: comet . ... Comet Holmes Over Hungary . ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Magnetic fragment behaviour Note A bipolar region was involved. ... Negative fragments form the arrowhead and positive ones distribute in the south-north direction. ... The middle part of the positive fragments moves towards the western part of the negative fragments. A few negative fragments in the west move towards the southern part of the positive fragments. ... Meanwhile, the western part of the negative fragments moves towards the southern part of the positive fragments. ...

... Welcome reception: 18:00-21:00 Session 1: Chair - George Hobbs . ... Probes of magnetic fields --------- . ... 10:00 JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ... 11:30 Benjamin Whelan "Probing Galactic and intergalactic magnetic fields using ultra high energy cosmic rays" . ... 13:30 Shea Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . ... 09:30 Andrew Melatos "Magnetic fields of compact objects" ...

... connection points . ... The point P3 is the connection between the horizontal and vertical actuators and is the axis of rotation for the tail gunner motion. processing: survey/020204/reduc We can compute P3,P5 (the moveable points) in dome centerline coordinates if we have the actuator distances and we know the positions of the above connection points in dome centerline coordinates for a given position of the tertiary (say the nominal focus position).(see actuator distances to dome centerline ). ...

... 2010 May 6 . Northern and Southern Owls . ... Explanation: Captured in colorful telescopic portraits , two cosmic owls glare back toward planet Earth in this intriguing comparison of planetary nebulae . On the left is M97 in the constellation Ursa Major, also known in the northern hemisphere as the Owl Nebula. On the right is its visual counterpart, the southern Owl Nebula in the constellation Hydra, cataloged as PLN 283+25.1. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... The Russian TESIS/ CORONAS-PHOTON Solar Observatory, which has been working in orbit since January 30th, 2009, has photographed one of the most important events in the build up to the upcoming solar cycle - the formation of our star's new southern belt of activity. The first magnetic fields of the new cycle in the southern hemisphere appeared on the Sun's surface on May 23-24th. ... The belt of activity is one of the primary concepts, characterizing the solar cycle. ...

... This page provides some context for the Heritage release of the HST/ACS 14th anniversary images of what John A. Graham first positively identified as "a peculiar southern ring galaxy". The image data displayed below show the environment around the RN nuclear ring galaxy VV785 (a.k.a. AM0644-741, the Lindsay-Shapley Ring, or Graham's Ring Galaxy) in ground-based radio, IR, and optical wavelengths. ... Above are the SHASSA Continuum (left) and H-alpha images of the field around the ring galaxy. ...

... In a solar prominence, charged particles stream up from the Sun, spiraling around magnetic field structures poking out of the solar surface, and ultimately fall back along those structures into the Sun. ... As evolution