... Subject: FRIDAY'S FANTASTIC FIREBALLS . ... If anyone saw the major fireballs which appeared over Ireland (andб parts ofб GB) at about 22.55 BST on Friday 21 September, please quickly send as much detail as possible of your observation to me, and to Armagh Observatory, at jmf arm.ac.uk . ... PLEASE GIVE AS MUCH OF THE FOLLOWING DETAIL AS POSSIBLE: . ... Approximately what angle above the horizon were the fireballs when you first saw them? ... Please describe any colours that you saw. ...

... The zeta function of the classical monodromy transformation of the germ $f$ is a topological invariant of it. Let us consider a parametrization (uniformization) of the curve $(C,0)$. The order of a function on $(C,0)$ as a function in the uniformization parameter defines a decreasing filtration on the ring of functions on the curve singularity. It appears that the Poincare series of this filtration (considered as a rational function) coincides with the zeta function mentioned above. ...

. The International Astronomy Olympiad .

spaceweb@oulu.fi - last update: 28 May 1995, 0800 UT . Advanced plasma theories are extremely important when one tries to explain, for example, the various waves and instabilities found in the plasma environment. ... In the kinetic theory it is necessary to know only the distribution function for the system of particles. ... The dependence of the distribution function on the independent variables r , v , and t is governed by an equation known as the Boltzmann equation . ... Hot plasma theory . ...

... Sun images . Magnetic storms online . Sun flares . Geomagnetic activity forecast . ... September : 2014 . ... No geomagnetic storms were observed for the past 3 hours No geomagnetic storms were observed for the past 24 hours . ... Mean planetary A index = 8 . ... Last updated: September 10, 2014 00:00 UT . ... 1953-2016 Laboratory of X-ray astronomy of the Sun, LPI RAS, Russia . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...

Stellarium 0.12.3 . ... Plugins . ... FileљStructure . FileљList . FileљMembers . plugins . TelescopeControl . src . servers . Socket.hpp . ... 3 љ telescope server programs, that can communicate with stellarium . ... 5 љ It also contains smaple server classes (dummy, Meade LX200). ... 7 љ Author and Copyright of this file and of the stellarium telescope library: . ... 92 љ Socket ( Server &server, SOCKET fd) : server(server), fd(fd) {} . 93 љ Server & server; . ...

... the time of observation . ... Observing the Changing Position of the Sun To Establish Cardinal Directions . ... Observations of the Sun's apparent movement across the sky and its pattern of rising and setting in the east and west horizon helped to establish the cardinal directions. ... The final stage of the Sun's return was marked by the observation that the Sun had reached its highest altitude when the full width of your mitted hand could fill the gap between the Sun and the horizon. ...

... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON MARCH 2013 HAS MADE W mar.= 57.9, THAT GIVES FOR 45 MONTH (2012, SEPTEMBER) DEVELOPMENT CURRENT 24 CYC- LES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*sep.= ... Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 01 - 07.04.2013, Forecast on 08 - 15.04.2013, Carrington Rotations, 2135 (21,5.03.2013) SUNSPOT-FORMING ACTIVITY OF THE SUN CHANGED AT THE AVERAGE LEVEL. ... GEOMAGNETIC CONDITIONS REMAINED UNSETTLED AND QUITE. ...

... Further uncertainty is added by most Pleiads sharing names with otherwise unrelated mythological characters. ... The Pleiad(e)s were the seven daughters of Atlas and Pleione, and half-sisters of the Hyades, whose mother was thra (`bright sky'; a different thra than the mother of Theseus). They were perhaps also half-sisters of the Hesperides, who were daughters of either Night alone, or Atlas and Hesperis (`evening'), or Ceto and Phorcys. ... Another Asterope was daughter of the river Cebren. ...

.

. The sharply-defined crater just above the center of this Cassini image shows layers of alternating bright and dark material. A thin dark layer on the crater wall appears to define the base of an ejecta blanket. Cassini was 8,314 miles (13,377 km) from Phoebe when this image was taken. NASA / JPL / CICLOPS

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Stars . ... September . ... By admin September 8, 2014 Posted in: September . ... Image credit: Colin Johnston/Armagh Planetarium/Stellarium) . A little northeast of Aquila the Eagle lies the little group of five stars forming Delphinus the Dolphin. This is one of the Classical constellations listed in Ptolemyт??s Almagest in the 2nd century AD. ... There is little to say about the stars of this little constellation. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Brief History of Rocket and Space Technology . ... Experiments and Researches from 2013 . Experiments and Researches (2000-2013) . Rocket Space Complexes . ... Images . ... Automatic Space Systems . Universal Space Platform . ... Crew 43/44 . ... Experiments Program . ISS-43 Images . ... Sixteenth Russian Visiting Crew . ... Support of the Station functionality; . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... The vast quantities of data produced by modern radio telescopes have outstripped conventional visualization techniques available to astronomers. ... While visualization techniques in other areas find some application in astronomy, problems peculiar to the field require new techniques, such as methods for identifying three-dimensional regions. ... By presenting data three dimensionally, the astronomer may identify structure in the data which is not obvious when using conventional tools. ...

... Algorithm for selection of defining sources 1. ... Take the common part of the "minimum" sets Make 1. and 2. for both global solution and time series and obtain common set 319 common sources for "global solution sigmas" case Comparison of IAA list, and 380 sources OPA list, set of defining sources ICRF1 and combined set Solution · Given catalogue RA, DE, arbitrary catalogue ra, de. dRAi RAi ra i Algorithm can be improved with additional condition Sum over all deltas less than 1 degree. ...

... The purpose of the meeting was to review the current status of project development and to discuss working plan for international cooperation on the stage of preparation to the launch. 22 foreign specialists participated in the meeting representing Australia, Canada, China, Finland, Japan, the Netherlands, Ukraine, United Kingdom, and USA. ... To define personal content of proposed working groups and to develop plan of their activity for 2003 year (15 November 2002, chairmen of working groups). ...

... With this adjustment, the largest three-month range occurs in February-April and is 71 њF. The range for all year, still removing the January 1962 record low, is 88 њF. The expansion coefficient for aluminum alloy 6061 is 24.3 microns/m-њC while that for borosilicate glass E6 is 2.8 microns/m-њC. The expansion coefficient difference is 21.5 microns/m-њC. Combining this number with the scale factor equation from the previous section gives a coefficient of 0.207 mm/њC for primary motion. ...

... The nodes defined by the specified region and lattice spacing will be set equal to one of three possible values depending on whether the node is outside, on the polygon perimeter, or inside the polygon. ... The xy-files simply represent data point locations and the mask is set to the inside or outside value depending on whether a node is within a maximum distance from the nearest data point. ... Default is grid registration]. ... S Set nodes depending on their distance from the nearest data point. ...

... The first two working group reports (on Extrasolar Planets and the Herschel--ALMA Synergies) were released in 2005 and 2006, and this third report covers the area of Fundamental Cosmology. The Working Group's mandate was to concentrate on fundamental issues in cosmology, as exemplified by the following questions: . What are the essential questions in fundamental cosmology? ... What are the appropriate methods with which these key questions can be answered? ...