The results of a search for ultrarapid variability of galactic water maser sources at the wavelength 1.35 cm on a timescale of several minutes to 1 h are reported. A special observational technique was developed. ... Among those, several sources that have shown such variability were found. ... Clear evidence for such a variability type was found in at least two sources: W49N and W33B. Variability of this kind displays itself only in certain states of the water masers. ...

Journal of the Amateur Astronomers Association of New York June 2008 Volume 56 Number 6, ISSN 0146-7662 EYEPIECE Global snow cover, an important surface feature for reflecting the Sun's radiation, has declined by 12 million square kilometers during the past half century. ... On June 6, a crescent Moon lies to Mars's lower right, while the next night the Moon stands below Saturn and Regulus. ... June 3 Moon at perigee, 221,985, 9:21 a.m.; New Moon at 3:23 p.m. June 7 Moon lies near Mars. ...

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Copyright ї 1994 by Maxim V. Tarasenko. ... The end of confrontation, associated with the Cold War, led to political feasibility and economic desirability of extended international cooperation in space. ... For example, during the first half of 1994 the Russian Space Agency got only 10 per cent of its annual request. ... Another aspect of an inter-FSU cooperation is what was supposed to be a joint use of results from space activity, both in terms of scientific research and space applications. ...

... 000, 1­13 (2010) Printed 21 September 2011 A (MN L TEX style file v2.2) A universal ultraviolet-optical colour­colour­magnitude relation of galaxies I1gor V. Chilingarian1,2, and Ivan Yu. ... Received 2011 Sep 15; in original form 2011 Feb 6 ABSTRACT The bimodal galaxy distribution in the optical colour­magnitude diagram (CMD) comprises a narrow "red sequence" populated mostly by early-type galaxies and a broad "blue cloud" dominated by star-forming systems. ...

... The author attempts to approach the problem from the positions of systems analysis with account for the ideological grounds and history of space activities in Russia and abroad, comparing its current interpretation with the initial goals posed by leading theoreticians and practitioners who stood at the cradle of the space exploration era. ... The space systems recognized in Russia as priority projects are largely developed with violations of the systems approach principles. ...

... 337, 275­292 (2002) The correlation of line strength with luminosity and redshift from composite quasi-stellar object spectra S. M. Croom,1 K. Rhook,1 E. A. Corbett,1 B. J. Boyle,1 H. Netzer,2 N. S. Loaring,3 L ... We measure highly significant Baldwin effects for most broad emission lines (C IV 1549, C III] 1909, Mg II 2798, H ,H ) and show that they are predominantly caused by correlations with luminosity, not redshift. ... The correlations of log W with log(1 + z ) for each line. ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

... Сегодня: 10 апреля 2016 г. Сотрудники университета штата Аризона разработали программу расчета последствий столкновения Земли с астероидами и кометами, которая так и называется Earth Impact Effects Program. Этот "калькулятор" они поместили в Интернет на специальном сайте, который находится здесь. ... На сайте есть также специальный раздел, где объясняются алгоритмы и методики всех этих расчетов. ... Калькулятор для расчета последствий столкновения Земли с астероидами . ...

... Звезды типа Миры Кита и полуправильные Среди пульсирующих переменных звезд поздних классов видное место занимают долгопериодические переменные звезды (ДПП). ... Изменения блеска мирид происходят более или менее регулярно, периоды большинства мирид находятся в интервале от 150 до 600 суток ( рис. ... В 4-м издании Общего каталога переменных звезд (ОКПЗ) ДПП (включая переменные типа Миры Кита, или мириды, и полуправильные переменные поздних классов) составляют самую многочисленную группу переменных. ...

... April 1992 The MD5 Message-Digest Algorithm Status of this Memo This memo provides information for the Internet community. ... combination): -sstring - digests string -t - runs time trial -x - runs test script filename - digests file (none) - digests standard input */ int main (argc, argv) int argc; Rivest [Page 17] RFC 1321 MD5 Message-Digest Algorithm April 1992 char *argv[]; { int i; if (argc 1) for (i = 1; i argc; i++) if (argv[i][0] == '-' argv[i][1] == 's') MDString (argv ...