... 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...

The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... The solar regions . ... The description of the solar regions . ... The law latitude bipolar formation of the Southern hemisphere observed from 14.07 to 21.07.06. ... In the previous Carrington rotation the group was submitted by the region 10896. ... It was observed from 30.07 to 3.08.06 at the tenth latitude of the Southern hemisphere, in the Western part of the Sun disc. ... The near-equatorial bipolar group was arisen 20.01.07 near to the region 10938, in the Western part of the Sun disc. ...

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

... Space activity at the beginning of XXI-st Century view from inside G.M.Chernyavskiy STC for Earth Space monitoring of FSUE , Russia 1. The systemic approach in astronautics Everyone who has linked his life with astronautics and those who are interested in the future of the inhabitancy medium and its expansion up to cosmic scales, are troubled about the current state and development of space activity in the World and in the Native Land of the first artificial Earth satellite (AES). ...

... Новости Астрономии и Космонавтики: от ПРАО , от "Звездочета" , от Железнякова , от "Переплета" ; . ... Справочники: Основы астрономии , Небесный путеводитель ; . ... Рейтинг страниц в теме: . ... Оценено и сдано в архив! . ... Отдел исследований Луны и планет (ГАИШ) . ... Институт астрономии РАН . ... ASC Data Processing Department Home Page . ... Отдел астрономии и космонавтики МГДТДиЮ . ... ASC Theoretical Astrophysics Department . ... НАЗАД, В СПИСОК КАТЕГОРИЙ (титульная страница AstroTop-100) . ...

SETI . ... 1.1 4 в 109 [1] Homo (4 - 5) в 106 [2]. ... Homo sapiens - , . ... Homo. 7. ­ (2 - 1, 5) в 106 [21]. ... Homo erecrus. 9. ­ 0, 4 в 106 [23]. Homo - - Homo erectus. ... 1981 [30]. . ... R (T ) (Star Formation Rate, SFR). ... B (M , ) LC ( ), , , 39 Number of civilizations Self-consistent origin of life 3500 3000 2500 2000 1500 1000 500 00 2 4 6 8 10 12 14 Post transition civilizations Uniform single-planets origin of life 16 18 20 22 Time, Gyr . ... Lexington Bo oks, 2003. ... 2001. ...