... NASA Headquarters, Astrophysics Division, Washington DC . The Astrophysics Program at NASA is mission oriented. With seven flying missions and twenty additional (international collaborations) planned, NASA provides an ever increasing amount of exciting astrophysical data, and supports a large portion of astrophysics data analysis. ... The future contains many changes that offer us significant challenges. ... Other restructuring plans affect the data analysis plans for several flying missions. ...

Next: Scattering properties Up: Polarization properties (transmitted radiation) Previous: Linear polarization: wavelength dependence . Traditionally, the main problem considered in connection with circular interstellar polarization is the meaning of the wavelength where changes the sign . ... This is also demonstrated by Fig. 19 (lower panel) which shows the wavelength dependence of the factors of linear and circular polarization for particles of magnetite as was done by Shapiro ([ 1975 ]). ...

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... Astronomical Observatory, Shevchenko Park, Odessa, 65014, . ... The XVI -th G. Gamow's Odessa Astronomical Summer Соnference-School, 14-20 August, 2016, Odessa, Ukraine . ... The XV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 16-23 August, 2015, Odessa, Ukraine . ... The XIV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 17-23 August, 2014, Odessa, Ukraine . ... The XIII -th G. Gamow's Odessa Astronomical Summer Соnference-School, 19-25 August, 2013, Odessa, Ukraine . ...

Next: Special Cases: Supernova Explosion Up: Change of Binary Parameters: Previous: Mass change . The binary separation a changes differently depending on the mass exchange mode. ... If the mass transfer is conservative ( , i.e. const) and one may neglect the redistribution of the intrinsic angular momenta of the components, the total orbital momentum conservation law implies . ... the orbital separation always increases in such systems). ...

... Our scientific interest is an accuracy of asteroid CCD observations obtained by amateurs and professional astronomers all over in the World. ... These data help us to analyse an accuracy of real CCD positions in the MPC Database. ... Do you test your observations of the small Solar System bodies permanently before sending them to the International Minor Planets' Center? ... Do you know a real accuracy of your positional CCD-observations in comparison with the other observatories' one ? ...

. The range of offshore 8m-class telescopes to which Australian astronomers have access is about to undergo significant changes. I will outline the extensive suite of facilities on the Gemini, Magellan, and Keck telescopes to which all Australian astronomers will be able to apply for from now through to the end of 2017. The International Telescopes Support Office at the AAO is positioning itself to support users of these facilities in a range of ways that I shall discuss.

ARI USEFUL LINKS modified and/or upgraded by YP (Jul 1, 2015) . Astronomy . ... Astronomy related journals . ... Go to TOP . ADS ( UK , US or French site) . Abstracts from the major Astronomy journals. ... Astronomy Picture of the Day . ... Astronomy and Astrophysics (Bertout's site). status of a paper . ... of Stellar Spectra by R.O.Gray and VISUAL atlas (as pdf) . ... A list of Astronomy databases from the well organised canadian site. ... Astronomy jobs.../courses Go to TOP . ...

... 30jul,01aug . ... Figure 1 is the Zenith angle pointing error in arc seconds versus za (top) and az (bottom). ... Figure 5 is the gain in Kelvins/Jansky versus za (top) and azimuth (bottom). ... Plots of the change in pointing, gain, and sefd (.ps) ( .pdf ) . ... Figure 1 has the change in zenith angle pointing error (Before - after) in arc seconds versus az (top) and za (bottom). Figure 2 has the change in azimuth pointing error (before - after) in arc seconds versus az (top) and za (bottom). ...

... weather conditions . where to look . common halos . ... single crystals . ... ice clouds . windblown crystals . ... ray paths, 60deg and 90deg prisms (how we get 90deg refractions in ice)) . crystal orientations . ... history of simulating halos . ... examples . ... Unususal crystal orientations . Unusual crystal forms . ... I know there is some work on crystal collection from aircraft and attempts to make model (non-ice) crystals. ... Graphic of crystal types: example . ...

Giant Jupiter. Jupiter . ... Jupiter has no solid surface that is why speaking about its dimensious point the radius of t