... 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. ...

... 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. ...

... When the Sun produces a coronal mass ejection, is the blast of sufficient force to alter our star's path through the cosmos? Do these eruptions significantly perturb our solar system? ... The Sun sheds material in two ways: a constant solar wind due to an outward expansion of its extremely hot upper atmosphere (or corona) and less frequent explosive events called coronal mass ejections (CMEs). ... Get instant access to subscriber content on Astronomy.com! ...

... The very first thing you should do now is to locate the limits of your slitlets because this information is needed for all further commands. ... LOCATE/MOS . ... Then you should have a look at your flat field and try again with . ... OFFSET/MOS . ... The results are stored in the frame . If you have not written anything to this keyword it will derive the name of the normalized flat field by adding an `n' to the name of the input flat (e.g. nmosff1 ) and write the name to . ... FLAT/MOS . ...

... 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) . ...

... Earth's North Magnetic Pole . ... A magnetic compass does not point toward the true North Pole of the Earth. Rather, it more closely points toward the North Magnetic Pole of the Earth. The North Magnetic Pole is currently located in northern Canada. ... Globular star cluster Palomar 13 has roamed the halo of our Milky Way Galaxy for the last 12 billion years. ... Here is what a meteor shower looks like from orbit. ... Last year, the 1999 Leonids Meteor Shower came to a tremendous crescendo. ...

... RECOMMENDED VALUES OF PHYSICAL CONSTANTS AND CONVERSION FACTORS. ... This reference must be included when these constants are used in a context where their full accuracy is important. ... elementary charge (of proton) . ... gravitational constant . ... unified atomic mass constant . ... of electron . ... of proton . ... Planck constant . ... Rydberg constant, m 0 2 m e e 4 c 3 /8h 3 . ... fine structure constant, m 0 e 2 c/2h . ... Bohr radius, h 2 ( pm 0 c 2 m e e 2 ) . ... Bohr magneton, e h /2m e...

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... 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 ...