... He made observations of a supernova (literally: nova= "new star") in 1572 (we now know that a supernova is an exploding star, not a new star). ... Brahe's meticulous observations showed that the supernova did not change positions with respect to the other stars (no parallax). ... This was early evidence against the immutable nature of the heavens, although Brahe did not interpret the absence of parallax for stars correctly, as we discuss below. Brahe made careful observations of a comet in 1577. ...

JSC Celebrates 40 Years of Human Space Flight . ... Scheduled for completion about 2006, the completed International Space Station will have a mass of about 1,040,000 pounds. ... The assembled space station will provide the first laboratory complex where gravity, a fundamental force on Earth, can be controlled for extended periods. ... Hospitals, business parks and solar electric power stations that beam clean, inexpensive energy back to Earth are likely to dot the "space-scape" 40 years from now. ...

Posting Observations . ... You will need to subscribe to vsnet-acc (to allow you access to post your observations). ... VSNet has several different e-mail sigs, and sub sigs. ... These list are controlled by a software package called " Majordomo ", which allows you to subscribe and unsubscribe yourself from these list with an e-mail message (automated). ... Once you have subscribed to vsnet-acc (which will only send you a welcome message back and nothing else) you can post to the other list. ...

. Geophysical Center of the Russian Academy of Sciences . World Data Center for Solar-Terrestrial Physics, Moscow . (automatic forward in 5 sec) . URL : http://www.wdcb.ru/stp/data/Images_of_Magnetograms/index.en.html WDC for STP, GC RAS .

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... The source exhibits a mas-scale structure which, according to the USNO multi-epoch monitoring at 2.3 and 8.4 GHz over the period from 1994 July through 1998 April, undergoes considerable changes in the brightness distribution and positions of the major structural features. Our image is qualitatively consistent with the structural pattern of the source. ... We note a difference of ~90 in position angles of secondary components in our image and the 5 GHz VLBI image by Shen et al. 1998). ...

... title=' Hartmann Bel Baby Changing Mats Впитывающие пеленки 60х60 см 10 шт. Hartmann - HartmannBel Baby Changing Mats Впитывающие пеленки 60х60 см 10 шт.' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Детские впитывающие пеленки Hartmann Bel Baby Changing Mats используются для дополнительной защиты постельного белья, обеспечивая максимальную степень впитываемости. ... Надежную защиту от протекания также обеспечивает непромокаемый внешний слой пеленки. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualitГїs . ... les plus belles images de l'Univers dГїcryptГїes pour vous . ... des pages consacrГїes Г la publication de vos photos Mais c'est aussi une vraie communautГї avec laquelle partager votre passion et nourrir votre curiositГї. Accueil Г? la une Le ciel change . ... L'espace, une vigie pour la biosphГЕre . ... 20/01/2015 - Une multitude d'Гїtoiles hors des galaxies . ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... About StarCalc . News . ... StarCalc Home Page . Short description of changes, implemented in the StarCalc, . ... CHANGES OF PROGRAM CORE FUNCTIONS. CHANGES OF PROGRAM INTERFACE. CHANGES OF OBJECT INTERFACES. ... New "Output console". ... Information, which is generated by StarCalc, is added into the console - for example, ephemeris tables. ... In the StarCalc state file can be saved autorotation parameters, object selection, object locking mode, auto start and stop autorotation mode. ...

... Instrument Description . Software: Version 4.0 . Version 3.0:Complete Documentation . ... ИОНОЗОНД ПАРУС, разработанный в ИЗМИРАН, предназначен для диагностики ионосферы и оперативного прогноза КВ связи. ... Общая структура ИОНОЗОНДА ПАРУС, Технические Характеристики , Конструктивные параметры на настоящий момент соответствуют модификации Комплекса: ВЕРСИЯ 3.0 . ... Там же находится полное описание Комплекса ИОНОЗОНД ПАРУС: ВЕРСИЯ 3.0 . ... 2004 IONOSONDE PARUS ...

... Pre-university education . ... Samara region . ... University at a glance . ... A group of young scientists of Samara University under the guidance of the candidate of chemical sciences Yevgeniy Aleksandrov began to make the most extensive database in the world for the structure and physical properties of crystalline coordination polymers. ... The idea of making a database for coordination polymers already exists in the scientific community of the world. ... SAMARA STATE AEROSPACE UNIVERSITY . ...

... Copyrightї1997 Bob Yen (byen@ix.netcom.com) (http://www.comet-track.com/hb/hb.html) . ... Information on Comet Hale-Bopp for the Non-Astronomer Hale-Bopp rotates about twice a day (3/14/97) . ... The Comet Observation Home Page was been selected to receive the Griffith Observatory Star Award for the week of February 2 - 8, 1997 for excellence in promoting astronomy to the public through the World Wide Web. ... Typically, about 1,000 individual users/computers access this page every day. ...

... ADC_Keywords: Galaxy catalogs ; Nonstellar objects Description: NGC 2000.0 is a modern compilation of the New General Catalogue of Nebulae and Clusters of Stars (NGC), the Index Catalogue (IC), and the Second Index Catalogue compiled by J. L. E. Dreyer (1888, 1895, 1908). ... The order of the new catalog is strictly by right ascension, the NGC and IC objects being merged into one machine-readable file. ... The book also contains a table of right ascensions for NGC and IC objects. ...

... Changed format option parsing routine in bp-p-options. added opt_reverseauthor to bp-refer, and added options parsing. 0.1.1 perl5/ad425.ref->ad425.bib in 25.3 seconds perl5/timetest.pl 2.31s total, 1.03, 1.01, 3.52 Added p-output.pl. ... No noticible change in running time, which means the debugging statements aren't slowing us down enough to worry about dropping them. 0.0.11 perl5/ad425.ref->ad425.bib in 22.7 seconds perl5/timetest.pl 1.98 total, 1.02, 1.01, 3.39 Added format registration. ...

... In the left part of the screen the items of ephemeris menu are situated. To the right one can see corresponding settings. In case the newly introduced settings are incompatible with each other or with other ones (it can be the result of improper change of previously existed setting or, what is virtually the same, result of violating the order from top down in which settings must be introduced) the warning notice appears on screen and conflicting settings are marked by special symbol. ...

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... The Meade Series 4000 Zoom Eyepiece has changed that impression completely and forever. ... Meade Series 4000 2x Apochromatic Barlow Lens (1.25") . Exclusive Meade 3-element, air-spaced design; thousands now in use worldwide. #140 2x Apochromatic Barlow Lens: The most advanced Barlow lens yet developed for commercial telescopes, the Meade #140 2x Apochromatic Barlow includes a 3-element, air-spaced telenegative lens unmatched in image resolution, contrast, and color correction. ... about meade | ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

MICROSCOPES . ... In the last three to five years, LOMO has developed new lines of products, including new families of biological, fluorescent, and polarizing microscopes, night vision devices, consumer Maksutov telescopes, etc. ... 1939 Company introduces its first student and biological microscopes. as well as its first manual movie camera . ... 1956 LOMO produces its first wide-screen-format movie projector and introduces its first fluorescent microscope for chemical structure analysis. ...