... 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...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... January 2006 resources . FROM THE January 2006 ISSUE . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON FEBRUARY 2016 HAS MADE Wfeb. = 34.3, 57.2 ( new ) THAT GIVES FOR 79 MONTHS (2015, AUGUST) DEVELOPMENT CURRENT 24 CYC- LE OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*aug. = 39.8; 66.3 - (in new system ); W*july = 41.0; 68.2 - (in new system ); - On July 1, 2015 Centre in Brussels moved to a new system of cal- culation the relative ... 103.6 THE MONTHLY MEAN OF GEOMAGNETIC Ap-index ON 2016, FEBRUARY Ap feb. ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

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MASTER OT J035815.59+214117.9 discovery - dwarf nova outburst MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 03h 58m 15.59s +21d 41m 17.9s on 2015-11-18.89742 UT. The OT unfiltered magnitude is 17.1m (limit 18.1m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2010-12-03.85624 UT with unfiltered magnitude limit 20.2m. Spectral observations are required.

Cost Estimating Web Site . ... 2005 NASA Cost Analysis Symposium Databases . ... World , European Communities , Other European Countries , Americas , Asia , Africa , General US , US Federal Government , US Department of Defense , Aerospace Industry , NASA , Science & Engineering Handbooks . NASA Cost Estimating Handbook 2004 , Parametric Estimating Handbook .. ... Consumer Price Index , Employment Cost Index , GDP Deflator , Import Price Index , NASA New Start Index , Producer Price Index . ...

... Page not found . ... Задачей КА Mars Express, является выполнение научных исследований, которые не состоялись из-за аварии российского КА Марс 96. ... Mars Express будет запущен в начале июня 2003 года с Байконура ракетой-носителем "Союз-Фрегат". Выход на орбиту Марса планируется на 26 декабря 2003 года. ... КА Mars Express также будет выступать в качестве ретранслятора для посадочных ступеней других международных миссий по исследованию Марса. ...