... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

... 1.Magnetic and magneto-elastic properties of heavy rare earth metals. ... High magnetic fields of 100 kOe and more were necessary to saturate the magnetization of havy rare earth metals. ... It was shown that the effective exchange field theory is sufficient for the description of the magnetic order in heavy rare earth metals and their compounds. ... The duality of the state of the magnetic carriers in the traditional 3d-magnetic materials. ... LHPP ISSP RAS © 2004 All rights reserved ...

... Tonight's Sky . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Explore how our universe and all the objects it contains form and evolve in Cosmic Origins a must-have app brought to you by the editors of Astronomy , the world s best-selling astronomy magazine. ... Discover the basic galaxy types, how black holes affect the universe and how galaxies and their larger conglomerates т?? galaxy clusters т?? form and evolve through cosmic time. ...

. Supernova Observing Form. EVENT: SN PARTICIPANT: DATE: LOCATION: TELESCOPE: MAGNIFICATION: ANGLE OF OBJECT IN DEGREES FROM HORIZON: COMPARISON STARS: V-MAGNITUDE B-V VALUE COORDINATES [2000] STAR A: STAR B: STAR C: STAR D: STAR E: MAGNITUDE ESTIMATES (*)see text) DATE MAGNITUDE COMPARISON EPOCH OF(*) CORRECTED MAGNITUDE (raw) STAR USED EVENT?(day) .

... One of this year's largest mass ejections from the Sun's atmosphere was recorded last Sunday by TESIS telescopes aboard the CORONAS-PHOTON satellite ( video - wmv 4.3 MB ). ... Over the course of a week, two gigantic solar prominences were simultaneously ejected from the surface of the Sun. ... Earth will not feel the Sun's influence either. ... The TESIS observatory ї TESIS: www.tesis.lebedev.ru . ... One of this year's largest mass ejections from the Sun's atmosphere (movie WMV, 4.3 MB) . ...

... 1995, Cycle 5, GO-5847 , PI, 9 orbits. The nuclear disk in the E4 radio galaxy NGC 7052: evidence for a central black hole? ... 1996/97, Cycle 6, GO-6537 , CoI, 8 orbits. ... Nuclear kinematics of the dense globular cluster M15 . ... A Census of Nuclear Star Clusters in Late-Type Spiral Galaxies . ... A Census of Nuclear Star Clusters in Late-Type Spiral Galaxies: II - Spectroscopy and Stellar Populations . ... The Ages of Nuclear Star Clusters in Early-type Spiral Galaxies . ...

We have analyzed dimmings (i.e. transient coronal holes) and manifestations of a . coronal wave in the famous event of 14 July 2000 using images produced with the EUV . telescope SOHO/EIT. ... this event was studied using running -difference EIT images at 195 formed by the . ... Running -difference images . ... fixed -difference images are considered. ... 171, 195, 284, and 304 , as well as the light curves of the main dimmings including . several later images at 195 . To event page ...

Guided by your suggestions, we desire to improve the Arecibo Observatroy operations to . better serve the needs of our users. Please complete and submit this form following your . ... Your comments will be reviewed by a number of NAIC-AO scientists and support staff. ... Receiver(s) used: . ... adequate . ... excellent . ... Please enter brief comments on the following: . ... ADDITIONAL COMMENTS: . If you have questions or problems with this form please send an email to . ...

VLBI proposal guide . VLBI proposal guide (PostScript 50 kbytes) . Available VLBI antennas - System Parameters . Available VLBI antennas - System Parameters (PostScript 42 kbytes) . VLBI antenna locations and baselines . VLBI antenna locations and baselines (PostScript 35 kbytes) . Proposal forms for all ATNF facilities are available in PostScript (.ps) and LaTeX (.tex) formats. ... PostScript Format (110 kbytes) . LaTeX Format (35 kbytes) . ... JPL Space VLBI home page . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... One of the rarest but most interesting effects which can be observed with the Irkutsk IS radar is anomal high power signal registraion(coherent echo) due to strong magnetic storms. ... These signals are formed at E-layer heights in the presence of a strong electric field which causes particles to drift. ...

... These other worlds are the moons of our Solar System , of which there are approximately 170 in orbit around our planets.Some of these moons are very interesting, and have diverse and unique features, very different to our barren, heavily cratered Moon .Jupiter, the largest planet in our solar system has the most moons of any planet with known 64 moons in orbit.The four ... Ganymede, the largest moon in the Solar System thought to have oceans located underneath its icy surface.( ...

Visitor Information and Housing Request . Please note: APO accommodations are not available to the public . Read this page carefully, and please submit this form 30-working days in advance of your arrival. ... When on-site accommodations are full, APO will assist you in obtaining off-site housing. ... To cancel an existing reservation, enter the name and arrival date and choose "cancel." ... Complete the name and arrival date in the fill-in form an